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00:02
1
Q: traceroute (UDP) lost packets

MMAXI am facing the following issue when running traceroute between two nodes in the same subnet. This is done as a test whether the network connection between this 2 nodes is reliable or not. We were told to use this approach from a known DB vendor's Support Team. While running the command: tracerou...

00:17
1
Q: Would superhuman elites allow for more liberal governance?

ThalesSuppose, if you will, that the aristocracy of my fictional pre-Christian European nation is entirely composed of superhumans. The source of their powers lies in their blood, and can only be inherited by birth - and not just normal birth, but birth to a father and mother from this elite class. The...

3
Q: How to delete members of a list by rule

Suite401I have a list: lis = {"a",1,""} and would like to delete from the list all elements that consist of "" to give: res = {"a",1} Thanks for help with this simple question.

DSP
DSP
1
Q: Are all pass filters stable?

dsp_guy2020I have the following Z-transform for a filter: $$ \frac{1-1/2z^{-1}}{1-2z^{-1}}$$ This is an all pass filter. The pole is located at $z=2$ which is outside the unit circle. Does that mean this filter is not stable? If this filter was implemented in the frequency domain (using FFT and overlap-and-...

2
Q: Consistency-proof of ZFC

PippenAccording to Gödel's Second Incompleteness Theorem, ZFC cannot prove its own consistency. However, I have read that a stronger system S, i.e., a system that can fully represent/simulate/formalize ZFC and even go beyond it, can prove Con(ZFC) (of course, only if such a proof results from what S ca...

6
Q: Analog story - US provides food machines to other nations, with hidden feature

AndrewThis is a near present day story for the time of publication - late 1990s/early 2000s, I think. At Christmas time, the US is sending devices (nanotech, I think) that can create food from non-organic raw materials (and perhaps build shelters). The protagonist learns that the food is adulterated wi...

00:42
3
Q: Correlation of a Specific Elliptic Curve with the Upper Bound of a Binomial Coefficient sum.

Aarush RanjanI was messing around in Desmos a while ago and tried to manually adjust an elliptic curve (where C is the adjustable) $$y^2 = x^3 - Cx + 1$$ to make it such that it cut the x axis at exactly 2 points (such that the little loop and the main curve were joined at exactly one point). And after approx...

3
Q: Real life examples of pseudo-metrics

user210089Every mathematician knows that, given a set $X$, a metric is a function $d:X\times X \to \mathbb{R}$ that verifies (i) $d(x,y)=0 \iff x=y$ (ii) $d(x,y) = d(y,x)$ (iii) $d(x,y)\leq d(x,z) + d(z,y)$ From these properties it is very easy to prove that in fact $d(x,y)\geq 0 \quad \forall x,y \in X$. ...

2
Q: Are there carbon fiber wing spar pins?

GabeThinking about parts and weight saving, I've never seen a pin made of carbon fiber, is there such a thing for the aviation industry?

01:04
5
Q: A composite calculation

TomWho discovered the calculation behind this alphametic? $MAG \cdot MESSAGE = A^{GM} + G$

DIY
DIY
2
Q: what is the purpose of long plastic sleeve tubes around connections in appliances

rogerdpackIt appears this particular stove top uses long plastic tubes around its connectors to the infinity switch. Why are those there? Why not just connect into it directly with a disconnect?

01:26
6
Q: Do isomorphic projective groups pull back to isomorphic matrix groups?

Ian Gershon TeixeiraLet $ \pi: SU(n) \to PU(n) $ be the projection map. Suppose that $ H_1 $ and $ H_2 $ are isomorphic subgroups of $PU(n)$. Must the subgroups $ \pi^{-1}[H_1] $ and $ \pi^{-1}[H_2] $ of $ SU(n) $ be isomorphic? This is certainly true for $ n=2 $ since $ PU(2) \cong SO(3) $ and there is a one-to-one...

1
Q: Did the widow of Zarepath only believe after her son was resurrected in 1 Kings 17:24?

Lyd1 Kings 17:22-24 22 And the Lord heard the voice of Elijah; and the soul of the child came into him again, and he revived. 23 And Elijah took the child, and brought him down out of the chamber into the house, and delivered him unto his mother: and Elijah said, See, thy son liveth. 24 And the wom...

01:49
7
Q: Is this map real?

Beastly GerbilI recently bought an old treasure map from an antique store with the promise of being able to find the treasure, but when I finally got round to opening it a bunch of scraps fell out and the map was all torn up!! This isn't any use! And the scraps seem useless too! Is this a real map? Is there ...

02:04
5
Q: Advice how to prevent sin

SoulPaulI would like to ask for advice when in the following situation: Being in a cycle of having a habit to certain things that are forbidden, without the motivation to work on getting better. Basically, knowing that it is forbidden, having the animal soul repeatedly and naturally win. And not being m...

02:16
1
Q: Questions regarding V22 Osprey

myplane150Can a V22 hover with only one propeller rotating under power? If yes, is the other prop feathered like in an airplane or still rotating sans power? Also, can the Osprey hover if one prop happens to fall off?

02:32
1
Q: Is there a Christian denomination that teaches that God cannot heal?

Mike BordenPrompted by a Meta conversation this question asks if there are any Christian denominations which teach that God cannot heal our physical bodies in the here and now. I am not asking after teachings regarding when, if, or how God may or may not heal. I am asking if any Christians officially, deno...

03:03
1
Q: How to restore the iPhone without downloading the latest version of iOS?

KamilI am trying to unlock my old iPhone using the guide from apple. On step 4 "Restore your iPhone with your Mac or PC" it says Your computer downloads software for your iPhone and begins the restore process When clicking restore, it asks me to Restore and Update. I don't want to update the iPhone ...

03:18
1
Q: Different verbs for activism/advocacy

Seanny123I'm trying to acquire French vocabulary around advocacy. I have found three different verbs used: Militer, which is frequently used in CBC news articles Plaidoyer, which I've never seen used, but came up in Google translate Préconiser, which I've seen used on Construisons Montréal homepage What...

7
Q: Children's book about intelligent bears or maybe cats

Yellow YetiI read this as a child, as a library book, so this would have been mid-late 1970s - the book could be older of course. The setting was a post-human earth, where a society of intelligent bears (?) lived. The protagonist, goes into a forbidden area, obvious to the reader as a ruined human city, whe...

TeX
TeX
04:02
1
Q: How to create rounded arrows to highlight inflection points in a TikZ graph?

wayneI have drawn a graph with TikZ, including the corresponding inflection points. An inflection point marks the transition from a concave up curve to a concave down curve (or vice versa). I would like to illustrate this transition using rounded arrows. Here is my code: \documentclass[10pt,letterpape...

04:17
3
Q: The Chofetz Chaim's Shocking View of Baalei Teshuva

BpsbThe Chofetz Chaim in Sefer Nidchei Yisroel makes some shocking statements about those born to parents who did not keep the halachos of Nidda. See beginning of chapter 41, where he assumes that these children will be evil and rebel against God. At the end of the chapter see here (middle of the fir...

2
Q: What is vi command package?

afsrgdtfhygjhjgfdseI can't find the name of vi command package. I didn't find it in dpkg -S and apt-file. What is the /bin/vi command package?

GIS
GIS
1
Q: Dealing with NULL when using aggregate functions in QGIS expressions

swiss_knightHow to deal with NULL in QGIS expressions when using aggregate functions such as union? E.g.: geom_to_wkt(union(make_point(1,4), make_point(1,2))) ----> 'MultiPoint ((1 4),(1 2))' geom_to_wkt(union(make_point(1,4), NULL)) ----> NULL geom_to_wkt(union(make_point(1,4), make_point(1,4)...

2
Q: How much difference in drag there is between a feathered and non-feathered airplane?

GabeConsidering a typical twin like a Beechcraft Baron/Piper Navajo, if you lose both engines and no feathering is done how much drag will you have compared to if feathering was done. Or in another way, what I really want to know is a rough estimate, about how much (percent wise) will your stall spee...

Law
Law
05:17
1
Q: If a friend hands me a marijuana edible then dies of a heart attack am I guilty of felony murder?

dsollenThe title is sort of asks the full question, but to elaborate. presume I've previously been arrested for marijuana possession, in which case my possession of the marijuana would constitute a felony. Since my friend gave me the marijuana he would be an accomplice to this felony. Felony murder, as ...

4
Q: How much does a ma'ah cost in £/$ in today's world?

Prof JamTo work out the exchange rate between the mishnayos/gemoroh money and nowadays to make the numbers more realistic.

CS
CS
05:35
1
Q: Why does ATSAM3X8E have two separate registers for setting and clearing bits?

kovacI am about confused about how to use registers on ATSAM3X8E. In the datasheet for PIO, for instance, there's almost always two registers for everything. For example, there are PIO_PER and PIO_PDR registers to enable and disable PIO register. So, if I want to enable GPIO line 1, should I both set ...

CS
CS
05:58
1
Q: How can I power 28VDC devices from a 24VDC system?

Muscle Nerd JerryI need to power a couple of aircraft type appliances (coffee makers) from a diesel engine. Aircraft standard voltage is 28VDC and each device needs 30 amps. The engine has a 24-volt/160A alternator. What would be the best way to get the extra 4 volts at 30 amps? I looked at various DC/DC conv...

1
Q: Wrong explanation for why "electron can't exist in the nucleus"?

Amit VermaWhen are asked about why an electron cannot fall into the nucleus we put together the argument that: as Heisenberg's uncertainty principle says $\Delta x \Delta p$ $\geq \frac{h}{4 \pi}$ $\Delta x \Delta v$ $\geq \frac{h}{4 \pi m}$ now we say that "as the size of the nucleus is 2fm(diameter)" $\D...

TeX
TeX
06:15
4
Q: Turn on double spacing, but not before equations

MarkI'm working on a document that has double spacing. I noticed that when the document is double spaced, the space between the text and the equations in the document is very large. So I end up with a lot of code where I use \vspace with a negative height to manually reduce the spacing: \documentclas...

2
Q: Coloring a 4×4 Grid

Oscar LanziFollowing up on this question: Peter is now tasked with coloring a 4×4 grid, so that all rows, all columns and both diagonals each use all different colors. An answer to the original question uses the properties of Latin squares to show that five colors is sufficient, but unfortunately one of his...

06:32
1
Q: Overstaying knowing I have a new Schengen visa

Mostafa Ahmed SamehI have a valid German Schengen visa expires on October 4th, I plan to go for work and stay after with relatives exceeding my expiry date. I have a new visa though that starts on October 5th. My question is can I travel with my old visa and overstay knowing I have a new German Schengen visa? Will ...

07:00
1
Q: Paying a fine when I don't trust the recipient

BennetI realized post factum that I forgot to pay for parking at a country park in the UK. There were signs and payment machines, but for various reasons I forgot to do it. Today I got a payment notice from, it seems, the outsourced manager of the parking, initialparking.co.uk . Their digital footprint...

2
Q: Infinite generation of subgroup of p-adic Galois group

NZKIt is well-known the the wildly ramified subgroup of the absolute Galois group of a $p$-adic field is infinitely topologically generated. Is the same true of the the absolute Galois group of the maximal cyclotomic extension of a $p$-adic field? Any reference is welcome.

5
Q: Are there epistemic vices?

andrósAre there epistemic vices? I understand that there are said to be epistemic virtues, such as curiosity. If someone keeps making the same style of epistemic error, by which I mean e.g. falling for variants of the same card trick (suppose each time it is explained), can we necessarily predicate an ...

RPG
RPG
07:27
2
Q: Does innate sorcery apply to every attack from storm sphere?

kbrimingtonA player at my table is looking at the 5e-2024 sorcerer and the 4th-level Storm Sphere spell from the Elemental Evil Players Companion. The spell provides a modest 2d6 AoE for the duration of its 1-minute concentration and also allows the caster to use a bonus action to attack within 60' for an a...

07:52
3
Q: Inertia Action on Kummer Sheaves

Hasan SaadIn 7.0.2 of Katz's book "Gauss Sums, Kloosterman Sums, and Monodromy Groups", Katz states the following (when $x=0$). Let $\chi:\mathbb{F}_q^\times\to\mathbb{Q}_\ell^\times$ be a multiplicative character and consider the associated sheaf $\mathcal{L}_\chi$ on $\mathbb{G}_\mathbb{m}$ over $\mathbb...

DIY
DIY
1
Q: Convert double rocker switch into single digital timer - how to make this work

Rob BI'm trying to convert this double rocker switch into a single switch with a digital timer. This switch controls my spa and pool lights and want them to turn on and off at specific hours. It also appears there is another wire running from the breaker that is soldered to the inside of the box, whic...

1
Q: How much technological progress could a group of modern people make in a century?

WasatchWind[I have edited the question to include more details] A group of let's say, 2500 people wake up from suspended animation on a world terraformed beforehand to be very similar to Earth. These people, while having fuzzy memory at first, slowly recover it, and are able to remember everything about mod...

08:15
3
Q: When is an analogy a weak analogy?

MarriottI wanted to use the watchmaker design argument for God as example. Paley argued that works of nature and human artifacts such as a watch have a particular property that reliably indicates design. Both objects exhibit the sort of functional complexity that warrants an inference that it was made by...

DIY
DIY
3
Q: Inspector tells me that the electrician should have removed green screw from the panel

CreativZeroAfter an electrical inspection of my 3-unit multifamily building, the inspector told me that the electrician has made a mistake when he installed the new panel because he didn't remove the green screw. According to AI: "In a subpanel, the green brass screw, often called the bonding screw or groun...

08:37
2
Q: Did Queen (or Freddie Mercury) really not like Star Wars?

SkoobaThe song "Bicycle Race" by Queen has the following lyrics; You say black, I say white You say bark, I say bite You say shark, I say hey man Jaws was never my scene And I don't like Star Wars I know not everyone has to like Star Wars, but is this true, or just fit rhythmically for the song? Has ...

09:15
4
Q: What is name of the background graph at the Approach0's site?

user1380196I am curious to know what is the graph displayed at the background of Approach0's search engine site. Here is a screenshot of the graph: I'm wondering if it is a mathematical function or a well-known graph? By an image search, I found this site with somehow similar graphs. It says: Abstract spi...

09:59
2
Q: The quest for a Wiki-less Game

AussieNoteI often see that a community will make a wiki for games that have a large amount of elements, I am attempting to create an in-game application of a "wiki" keeping track of what has been found or done to remind you of something you may have forgotten without having a 'terraria problem' where you n...

2
Q: How solid is the claim that Alfred Nobel found the Nobel Prize specifically because of his invention of dynamite?

Italian Philosophers 4 MonicaI've heard this claim my whole life. It gets repeated a lot. It's even listed at the American Chemical Society Nobel created dynamite to help people in building and mining, but he and others also used dynamite to make bombs, canons, and rockets used in wars. Nobel wanted his inventions to help ...

GIS
GIS
10:17
1
Q: Extract geometry information from a .shp file without the associated files

Craig TA client sent me a shapefile: C:\example.shp Of course they forgot the .shx, .dbf, .prj, .etc. All I really care about is the geometry and I know that it is stored in the .shp. Is there a way to extract that without the associated files? Additional Info: I'm comfortable with python and QGIS but m...

1
Q: using gnu date to set a time and format and subtract

Christian BongiornoCan I give GNU date a date and format string for that date and tell it to also subtract some time from it? It seems I can do 2 of 3 in 1 command but not all I have this date format: 09/Sep/24 05:02 AM and I need to subtract 1 day from it: For example: 09/Sep/24 05:02 AM - 1 day ago should yield 0...

10:59
1
Q: Can someone confirm this observed bug for `bc`? `scale=0` has no effect!

Eric MarceauWhen I run: fval=1.40 ; echo "scale=0 ; 1000 * ${fval}" | bc I get the result: 1400.00 With my specified value for scale, I expect no decimal digits. Does anyone else have this issue? Version: bc 1.07.1 Ubuntu 22.04.4 LTS (Upgrade of Ubuntu MATE from 20.04 LTS to 22.04.04 LTS, not a fresh insta...

2
Q: In GPV08 lattice signature, why the fact that the bijective from quotient group to the set of syndromes holds?

shiiu akiyamaI was recently reading the lattice-based signature scheme GPV08 (full paper), and the following statement confuses me alot (which is in the section 5.1, page 17&18): Throughout the paper, we use two easy but important facts about the lattices defined above. First... The second fact is that the q...

2
Q: How much could gravity increase before a military tank is crushed

Bob PersonSuppose we put a military tank (pick any one you want) in an artificial gravity chamber and crank up the Gs. At what point would the entire tank get crushed like a tin can? Let's also assume the atmosphere in the chamber is similar to Earth's. The closest reference I found was related to tanks an...

11:50
1
Q: How Would I Interpret This Harmonically?

t_t I'm sorry if this is a bit amateurish. However, this is a transcription of a song I heard online. The part that I am referring to is the instrument playing the thirds in the bass clef. The second to last staff. I'm not really sure how to interpret this. I assumed the 4th measure was just a I cho...

TeX
TeX
1
Q: Avoid the space given by parskip if it goes on a new page

Marco OlivieriSo, all along the code of my thesis I put blank lines between every mathematical environment, so it starts a new paragraph every time there is an equation. I did it because, since I'm using the package parskip with the \noindent option, I quite like the space it leaves between the text and the eq...

CS
CS
12:17
1
Q: Does Poincare recurrence show that Gibbs entropy is not strictly increasing?

user124910Statistical Mechanics setup: Consider a box of gas with $N$ particles in some initial macro state (fixed temperature, energy, etc.). A configuration of particles giving a fixed macro state is called a micro state corresponding to that macro state, and the set of all micro states is called the pha...

9
Q: Is there mathematical significance to the LaGuardia floor tiles?

QuuxplusoneI noticed that the new terminal at LaGuardia Airport (in New York) has an intriguing design for the tiles on at least one of their floor areas. It bears a superficial resemblance to aperiodic tilings such as the Penrose tiling, with its occasional "arc-like" patterns. Then again, it seems to be m...

GIS
GIS
12:31
1
Q: How to define an empty default-style?

Beettle JuiceI want to skip the feature that does not match any rules. I want GeoServer to draw nothing. And now I can achieve my goal in the way that using opacity=0 would make a transparent drawing. But I am worried that will affect the rendering efficiency. <sld:Rule> <sld:ElseFilter /> <sld:Polygon...

CS
CS
13:24
3
Q: What am I misunderstanding in the derivation of skin depth?

John ArgSuppose we have an electric field $$E_x(z) = E^+e^{-\gamma z} + E^-e^{\gamma z}$$ where $$\gamma=\alpha+j\beta$$ is the complex propagation propagation constant, as defined in David Pozar's Microwave Engineering Section 1.4. The propagation factor then has form (in the time domain): $$e^{-\alpha ...

1
Q: Can we use "day and night time" instead of "day and night"?

Ali RizviCan we use day and night time instead of day and night in a sentence? Is the use or addition of the word time with the phrase day and night correct or not?

ELL
ELL
13:49
1
Q: The pronoun in short yes/no answers to rhetorical tag-questions with the generic "you"

Victor B.Here are a few (proverbial) truths put as rhetorical tag-questions: You catch more flies with honey than with vinegar, don't you? If you want to succeed, you need to work hard, don't you? You cannot unscramble eggs, can you? You create your own luck, don't you? What's ailing me is the pronoun I s...

3
Q: Does every degeneracy come from symmetries in QM?

무은재 20서동원In my university, my professor said that every degeneracy in QM comes from a symmetry of the Hamiltonian. But I'm not sure it is true for all the cases. My counter-example is as follows: In the 3D harmonic oscillator, $E_n=\hbar\omega(n+m+l+3/2)$, where $(n,m,l)$ are quantum numbers of $x,y,z$ os...

CS
CS
14:09
1
Q: What we see at relativistic speeds

AbduSami bin KhurramI have a follow up question for What do the stars really look like, if you could travel at almost lightspeed? If we are on a spaceship, travelling at a constant speed of 99.999% the speed of light, most of the stars I see on one side will be blue-shifted. And most of the stars on the other side w...

14:20
1
Q: Remove spaces from the 3rd line onwards in a file on linux

Krish YtI need to remove all spaces from the 3rd line onwards. The spaces in the first two lines should not be removed. Any option to exclude the first two lines in sed or awk? Input file: This is the first line This is the second line This is the third line This is the fourth line This is the fifth line...

14:32
1
Q: Is it possible for one wing to stall due to icing while the other wing doesn't ice?

Aircraft Enthusiast 007My question is simple: Is it possible for one wing to freeze with ice completely to the point of stalling, while the other wing is fine? Let's say the pilots made a mistake by forgetting to turn on anti-icing systems. Is there any possibility of this happening, and if so what kind of phenomenon w...

14:44
1
Q: Why public key is taken in private key in Kyber KEM?

user120654We know that CRYSTALS-KYBER's KEM (key encapsulation mechanism) key generation algorithm is Output: Public key *pk* $\in B^{12\cdot k\cdot n/8+32}$, Secret key *sk* $\in B^{24\cdot k\cdot n/8+96}$ 1 $z \leftarrow B^{32}$ (32-byte string) 2 $(pk, sk′) =$ Kyber.CPAPKE.KeyGen() 3 sk $=$...

1
Q: Curve factor at position

Loma HarshanaWe can get the position at a curve factor (or length) using Sample Curve node. Is there a way to get the factor from the position? Edit: More specifically I am looking to find the factor of control point of the curve meeting certain criteria like "having the smallest x position (the left most point)

CS
CS
2
Q: Syntactically, who does Jesus refer to as 'to you' and 'those outside' in Mark 4:11?

SamContextually, is 'to you' restricted to the disciples present, and does 'those outside' refer to those not chosen as disciples, or those rejecting Jesus? Text: (NET) He said to them, "The secret of the kingdom of God has been given to you. But to those outside, everything is in parables,

15:12
1
Q: Confusions about Figure 16.1 in Munkres' "Analysis on Manifolds"

studyhardIn Munkres' "Analysis on Manifolds" , page 136 , Lemma 16.1 , it defines a function $f(x)$ to show that function in Figure 16.1. However, it seems the figure for $y=f(x)$ is wrong because $\lim_{x\rightarrow\infty^{+}}f(x)=1$. Am I right? This a question from Munkres' "Analysis on Manifolds". I s...

DBA
DBA
1
Q: Unstable plans when two first index columns have NULL values in all rows

EndrjuI have a weird case of a query that takes long to execute despite having good matching index. The thing is that the values of the first 2 columns in a non-clustered index are NULL in all rows. (For context, it became like that after archiving old data from old business processes). The query has W...

1
Q: Is quantum computation effectiveness dependent on EPR non-locality?

JamesSuppose 100 qubits are used to perform a quantum algorithm. According to the EPR view, each of these 100 qubits already have pre-determined states before we start the computation, which are just unknown to us. Does this automatically break all powers of quantum computation, if each of these 100 q...

15:27
1
Q: Sitecore headless on local environment experience editor facing issue

Anekar VishalWhen I open the Sitecore headless page in the experience editor, it does not load the page on the first try; it needs to be refreshed to load. The below error is coming when the experience editor is not loading ▸ Mixed Content: The page at 'https://sc103headlesssc.dev.local/?sc_mode=edit&sc_itemi...

DBA
DBA
1
Q: Is there any benefit to declaring an index that contains a primary key as unique?

J. MiniSuppose that I have a table with many columns that I don't care about, but two that I do: Primary and Secondary. There is a clustered primary key on Primary. CREATE TABLE [dbo].[OnlyTwoGoodColumnsButManyBad] ( [Primary] INT PRIMARY KEY CLUSTERED, [Secondary] NVARCHAR(500) NOT NULL, [E...

HSM
HSM
1
Q: Is this a misstatement of Euclid in Halmos' Naive Set Theory book?

zeynelI was reading Halmos’ Naive Set Theory. On page 1, he writes, One thing that the development will not include is a definition of sets. The situation is analogous to the familiar axiomatic approach to elementary geometry. That approach does not offer a definition of points and lines; instead it d...

CS
CS
16:00
1
Q: Big Transition of Binary Counting in perspective of IEEE754 floating point

Muhammad Ikhwan PerwiraIf I iterate over binary representations from 000...000 to 111...111, is there a significant transition at some point? In the IEEE 754 float32 format, the position of the bits matters, where the most significant bit (MSB) is the sign bit: sign (1) | exponent (8) | mantissa (23) If I start iterat...

ELL
ELL
16:25
3
Q: The meaning of "sharp" in "sharp sweetness"

Kaguyahime Go for gold in the kitchen with our Olympic Games inspired menu! Tuck into this Creamy Chicken à la Normande whilst you're watching Paris 2024 for a winning dinnertime. Cooking "à la Normande" means "in the style of Normandy", resulting in a creamy sauce with tart apples and a hint of sharp swee...

3
Q: Can I land on the "EuroAirport Basel-Mulhouse-Freiburg" with a German National Visa as first destination (NON-EU Citizen)?

Hagverdi IbrahimliI will be travelling to Freiburg (Germany) for study purposes. I recently obtained a German national Visa (type D) and considering to fly to the EuroAirport Basel-Mulhouse-Freiburg which is the closest airport to Freiburg. Since, this will be first use of my Visa, am I allowed to enter France fir...

1
Q: Text processing: Filter & re-publish HTML table

Fe2O3Background Some years back, with a surfeit of free time, I would scan through a webpage listing of "today's" free-to-air television listings hoping to find an interesting program or movie ("looking for hen's teeth".) The website was mature, offering quite a number of options and "GollyGosh!" feat...

DIY
DIY
16:51
5
Q: Can the brick opening for an exterior door be close to the same size as the door?

SandytreanI'm trying to turn a window into a door. The house is 1930s with brick veneer. Because the window is next to two 90 degree corner, we cannot make the brick opening any larger. Any door will have to fit into the same opening as the current window. I've had a few contractors come out to give me quo...

8
Q: Board game where you built physical "bridges" to fish for resources from a pond

VinskiI am looking for a boardgame that I played some time between 1999 and 2005. The board was round and resembled a pond. Every player acted as a group of stone age people and you had three (maybe more) workers, that could do different things. The main gig of the game was to build some kind of bridge...

1
Q: Face intersect while keeping objects separate

Christopher PrattI want to do a "Face" -> "Intersect (knife)" between two objects, but keep the objects separate. This intersect seems to only work if the objects are joined? As far as I know separating joined objects after a face intersect can be arbitrarily difficult for complex meshes. If joining the meshes is...

1
Q: Is there a result allowing to seperate two connected components

hanava331Let $X$ be a subset of $\mathbb{R}^n$ such that $$ X = A \bigcup B, $$ with $A\cap B = \emptyset$ and $A$ and $B$ are two connected non empty susbets of $\mathbb{R}^n$. Is there a result allowing to prove that there exists a smooth fucntion $F$ such that $A \subset \{x \in \mathbb{R}^n\mid F(x)<0...

17:18
3
Q: Where Does Rashi Mention the Streets of Venice?

The Thinking YidAfter some discussion with some chavrusot, someone mentioned that there is a Rashi somewhere in Shas that discusses either the streets of Venice, or at least a city with "dry streets" surrounded by water. I cannot seem to locate a source for this using other methods. Has anyone heard of a mekor f...

Vi
Vi
17:46
1
Q: Why do these two nearly-identical bindings take different time to execute?

SvalorzenI like to open Vim with many buffers open, and switch between them using plugins. Because I work a lot in C++, I like to have a way to quickly switch between header files and their corresponding source files and vice-versa. With some work, I have created these two bindings which essentially do th...

4
Q: Practice test paper answers all seem incorrect, but provider insists they are ... what am i missing?

StevieI bought some math practice papers for my 10yr old in preparation for UK 11+ exam. He got frustrated by one of the questions because none of the provided answers seem correct. I agree with him, but i've contacted the provider and they have insisted (twice) that the correct answer is 200 minutes. ...

18:06
1
Q: Confusion regarding Talent Chercheur visa for France

AnirudhI am a holder of an Indian Passport, and I applied for a Talent Passport visa for France (to do a PhD). I got the visa today, however I am confused about it as it is different from many of my peers' visas (who are also doing their PhDs in France and hold Indian passports). The information written...

2
Q: Who was the French detective mentioned in Hitchcock's "Shadow of a Doubt"?

JConstantineHere's a little bit of context from Shadow of a Doubt (1943): Herbert Hawkins: That little Frenchman beats them all. You can talk all you like about Sherlock Holmes. That little Frenchman beats them all. Joseph Newton: I read it. Air bubbles don't necessarily kill a person. Those writers from th...

1
Q: What is the working justification of this circuit?

Antonio51Made with microcap v12. This is a circuit on which a question was asked by a user who later deleted the question. This circuit works at ~ 15 MHz. I would know how I could justify its operation. How could I do this justification?

Law
Law
1
Q: Does a Debt Exist for A Parking Charge Notice

BWFCA question on Personal Finance & Money asks for options to pay a parking "fine" when the recipient is not trusted. The asker is not arguing that they owe the money but, for security reasons, they do not want to use any of the methods offered by the parking company to make the payment. The comme...

18:27
1
Q: Is the product of two NONZERO elements independently drawn from a prime field uniformly distributed?

JasonLet $\mathbb{Z}_p$ be a prime field, $a, b$ be two random elements independently drawn from $\mathbb{Z}_p^*$, and $$ c = a* b \mod p,$$ is $c$ uniformly random? and why? How is this question related to the discrete-log assumption? Because if $a =b$, then my understanding is that the discrete-log ...

TeX
TeX
3
Q: package accents seems to be incompatible with Unicode-math

Ted BlackI have created the following MWE \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{accents} \usepackage{unicode-math} \unimathsetup{math-style=ISO} \begin{document} $\{\underaccent{\bar}{e}_1,\ldots,\underaccent{\bar}{e}_n\}$ \end{document} The accents package returns a lot of ...

2
Q: Guesstimate a multiple choice exam

quaragueExam time is here and the final consists of 20 True/False questions. Unfortunately you are a very bad student and you only know the answer to 5 of the questions. It so happens that the answers to the 5 questions you know are all True. For the other 15 questions you have no clue and have to guess....

19:06
1
Q: Can a software vendor prohibit use of their open source / community edition software (GPLv3) after subscribing to their Enterprise license?

MarkoA software vendor who offers a product under both an open source (under GPLv3) license as well as an Enterprise license has the following terms in their Enterprise agreement: Subscriber may not, and will not permit or induce any third party to: (i) decompile, reverse engineer, disassemble or oth...

1
Q: I am trying to update but its giving error and I am not getting whats's the issue

Jitendra Singhjitendra@jitendra-Inspiron-15-3520:~$ sudo apt full-upgrade Reading package lists... Done Building dependency tree... Done Reading state information... Done Calculating upgrade... Done Get more security updates through Ubuntu Pro with 'esm-apps' enabled: libcjson1 libavdevice60 ffmpeg libpostpr...

2
Q: Common Indoeuropean Phonotactics Rules

vicky_molokhWhat kinds of phonotactics restrictions/rules are rather widespread in Indoeuropean languages nowadays? The kinds of sound-combination rules that if broken would immediately sound 'faraway'? Obviously many won't be universal, but which ones are at least represented in the current major languages ...

6
Q: Is there a name for this condition on monomorphisms?

Lukas Juhrich$\newcommand{\C}{𝓒}\newcommand{\D}{𝓓}\newcommand{\mon}{\hookrightarrow}$ Let $R: \C \to \D$ be a functor preserving monomorphisms. I define a mono $ι: A \mon B$ to be $R$-strong if for every mono $h: Z \mon B$ we have that $h$ factors through $ι$ iff $Rh$ factors through $Rι$. In diagrams: Is ...

19:45
1
Q: I want to write a script that simultaneously renders whats on my webcam to a window on my screen and records a video

BradI have tried a combination of: v4l2loopback ffmpeg mpv But either the web-cam view, or the web-cam record works, but never both together. Can anyone provide a script that achieves this? This is what I've tried so far: #!/usr/bin/env bash set -x # This needs the video loopback module to be ins...

20:08
3
Q: Canonical decomposition as wedge sum up to homotopy equivalence

AGenevoisI am curious: is there a canonical way to decompose a finite simplicial complex into a wedge sum up to homotopy equivalence? More formally: Let $X$ be a finite simplicial complex. Is $X$ homotopy equivalent to a wedge sum $X_1 \vee \cdots \vee X_n$ such that no $X_i$ is non-trivially a wedge su...

4
Q: Please help me identify my Dad's bike collection (80's-2000's)

Sarah HarrisonMy Dad was a mamil (middle aged man in lycra) in the 80's. He was an enthusiast and a collector and since he passed away in 2022, I have been slowly sorting through his many collections. It feels like time to find new homes for his bikes. I am hoping someone here can help me identify his bikes an...

20:48
2
Q: Engaging students in the beauty of mathematics

C25I am a teaching assistant for Calculus I, and as a TA, I also take on teaching responsibilities. My goal as a teaching assistant is to help students appreciate the beauty of mathematics—not just processing theorems or mechanically learning definitions and proofs. Currently, we are working on the ...

1
Q: How resiliant is a private key passphase to brute force attacks?

Antonelloin the documentation of Ubuntu ssh keys, I was surprised to read "If your RSA key has a strong passphrase, it might take your attacker a few hours to guess by brute force.". Really? A good pseudorandom passphrase with enough length, made on a modern system, could be challenged so quickly by bru...

21:03
2
Q: What is the shortest viable hmac for non-critical applications?

Vilx-I'd like to generate a QR code (or some other 2D barcode) that would include a HMAC of its contents. Since it's a printed QR code, and since it will already contain a fair amount of data, I'd like the HMAC overhead to be as small as possible, while still making it reasonably difficult to crack. By "

21:16
2
Q: What does "Mas que nada" mean and how does that derive from the individual words?

mdeweyThe recent death of Sérgio Mendes gave rise to an obituary in a UK paper which mentioned, among other things his performance of the song Mas que Nada. I am struggling to disentangle that title. Initially I thought mas might be a misprint for mais but that is clearly not the case. I know that mas ...

1
Q: Why would the GPL be viral, while EUPL isn't, according to the EUPL authors?

OpifexSo, according to the FSF, any work that links to a GPL licensed work is considered a derivative work, and thus also needs to be covered by the GPL. The EUPL also demands derivative works to become EUPL licensed, however... they have a different opinion on what constitutes a derivative work: The ...

2
Q: Error while Docker setup version is obsolete error during connect

RahulI'm new to Docker in Sitecore. While Setting up the Docker Locally template and all things installed but when running .\up.ps1 I'm facing the below error. Is there anyone facing the same issue please let me know. PS C:\Workstation\DockerLearing\DockerLearning> .\up.ps1 Building containers... time=

1
Q: Using "provide" with value of a variable

Peter PetigruI want to use provide with the value of a variable. I can't have it written it down as text. For example, I want to provide the symbol: foo. Normally, I would do: (provide 'foo) But now I have the following: (setq bar 'foo) And I have to provide bar's value. I tried the following: (setq bar 'fo...

TeX
TeX
1
Q: Expansion in Latex3 when transforming an input and forwarding it to another function

VincentThere are still a lot of mystery around expansion in LaTeX for me, but even given that, there is something I don't understand in LaTeX3. Let's say (just for the example), that I want to test whether something is lowercase by comparing an argument #1 to its lowercase version \str_lowercase:n{#1} a...

CS
CS
21:35
1
Q: Can't identify logo for a 135N68A MOSFET. Hunting for datasheet. Any ideas?

mcfudgeThis MOSFET was inside an unbranded Chinese made PWM solar charge controller with no model number:

3
Q: Is it true that before modern Europe, there were no "nations"?

StarckmanThe concepts of "nation", "state", "nation-state" and "country" are not self obvious. Here are definitions: State A State is an independent, sovereign government exercising control over a certain spatially defined and bounded area, whose borders are usually clearly defined and internationally ...

22:21
4
Q: jq - ip addr show in tabular format

hanjoI'd like to pretty print the ip addresses and show the output in in tabular format, including all the meta data such as valid_lft, temporary, etc. I figured out that ip -j addr show eth0 is giving me the JSON I need. If I run ip -j addr show eth0 | jq -r '.[0].addr_info' the data is already filte...

2
Q: Torah service on shabbat with no kohanim and not enough yisraelim

Joel KIf there are no kohanim in shul on shabbat, Ashkenazi practice is to give the first aliyah to a levi or yisrael, and the subsequent six aliyot to yisraelim. (See Shulchan Aruch Orach Chaim 135:6,9,10.) What happens if there are no kohanim and five or fewer yisraelim, with the rest of the minyan m...

CS
CS
22:42
2
Q: Did the heavenly Temple have a separation of the two inner rooms?

Revelation LadAfter bringing the people out of Egypt, Moses received instructions to build a Tabernacle. Exodus 25 (ESV) 8 And let them make me a sanctuary, that I may dwell in their midst. 9 Exactly as I show you concerning the pattern of the tabernacle, and of all its furniture, so you shall make it. We kn...

1
Q: IC identification - Analog Devices with top marking S2 M

TedPlease help me identify this Analog Devices IC in the MSOP-8 package. The top marking is "S2 M":

22:55
2
Q: Best memory / storage solution for high read / write throughput application(s)?

stackoverflowing321I have an application that uses a Raspberry Pi Model 4B (4GB RAM) running Raspberry Pi OS. Initially I was flashing the OS image to an SD card (and using that for storage as well), but I wanted faster read / write performance, so I switched to booting from a USB flash drive (and using that for st...

23:07
2
Q: How do I go about writing a tragic ending in a story while making it overall satisfying to the reader?

AllasterI am working on a horror-ish novel in my spare time and want to end it by killing off the protagonist or her failing somehow. For a bit of background, here are the basic plot points of my story, Under the Crow's Song: Alice (Protag) is struggling to move on after the disappearance of her father a...

23:21
20
Q: A journal has published an AI-generated article under my name. What to do?

Diomidis SpinellisThe Global International Journal of Innovative Research has published a fake research article under my name, complete with a DOI doi:10.59613/global.v1i3.42. The article appears to be entirely AI-generated. I never had anything to do with the article: I never created the text, nor did I submit ...

TeX
TeX
2
Q: Paragraph indents dissapeared suddenly

lukygeeAt some point my paragraph indents dissapeared... I cannot recall when. Why is this happening? Here is a MWE that does not work for me MWE: \documentclass[a4paper,12pt]{report} \usepackage[document]{ragged2e} % Justify \begin{document} \section{Test Section} This is the first paragraph of the ...

CS
CS
1
Q: Key fob frequency filter design

Yousef IrshaidI was hooked by this flipper zero reel. This is the filter they showcased to pass the key fob signal: Unfortunately, the inductor is not very clear, and I want to seek help with the design, so I can try it. With my limited knowledge of filters, I tried to figure out the inductance using the reso...


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