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sonicboom
sonicboom
10:00 AM
Let $X_n$ be a random variable that depends on $n$ and suppose $E[|X_n|] = O(n)$. Then can we say $E[|X_n|^2] = O(n^2)$?
 
Sayan Chattopadhyay
Sayan Chattopadhyay
10:11 AM
Absolutely@feynhat
 
Srijan M.T
Srijan M.T
@robjohn Do you mean delta x or x increases sir ?
 
robjohn
robjohn
@SrijanM.T $x$ increases, then $\Delta x\gt0$
 
Srijan M.T
Srijan M.T
Like this
 
robjohn
robjohn
In that diagram, $y$ increases as $x$ increases
That is not ALL cases
 
Srijan M.T
Srijan M.T
@robjohn Ok.o
I got this. As x increase , the y increases
So , do they come inside the delta x
or delta x shifts ahead
 
robjohn
robjohn
10:16 AM
In the picture that I drew, $y$ decreases as $x$ increases
 
Srijan M.T
Srijan M.T
@robjohn Yes sir. That is because of the way the curve is drawn. It is down. I got that one
 
robjohn
robjohn
it is not the way the curve is drawn, it is how the function behaves.
 
Srijan M.T
Srijan M.T
Ohk.
 
robjohn
robjohn
You cannot make $y=-x^3$ be an increasing function by drawing it differently
 
Srijan M.T
Srijan M.T
So , we have two diagrams here as I am getting it. One is the textbook one. As x inc , y inc and as x dec , y dec. second one is what you drew , where it is right to say that as y inc , x dec and as x dec , y inc
So , is this comment right
 
robjohn
robjohn
10:20 AM
The diagrams are of two different functions. One is an increasing function (the book) and one is a decreasing function (mine). I drew mine to show that not all functions are increasing
 
Srijan M.T
Srijan M.T
Yes ok.
 
robjohn
robjohn
In a decreasing function, no matter whether you go from point $A$ to point $B$ or you go from point $B$ to point $A$, the $\Delta x$ and $\Delta y$ will have different signs, and so $\frac{\Delta y}{\Delta x}\lt0$
 
Srijan M.T
Srijan M.T
Ohk. So , the 1st comment in my book is about increasing function and second about decreasing function graph
@robjohn ok.
 
robjohn
robjohn
@SrijanM.T yes
 
Srijan M.T
Srijan M.T
Ohk
Thanks a lot sir for help and your time.
It didn’t say exactly that they are talking about two different graphs , how did you predict it ?
 
robjohn
robjohn
10:24 AM
you have to look at what they are saying. $\Delta y=y(A)-y(B)$ and $\Delta x=x(A)-x(B)$
 
Srijan M.T
Srijan M.T
Ohk.
 
robjohn
robjohn
if $\frac{\Delta y}{\Delta x}\lt0$ the function is decreasing. if $\frac{\Delta y}{\Delta x}\gt0$ the function is increasing
 
Srijan M.T
Srijan M.T
Yes. Right.
I will make sure to check like this.
 
robjohn
robjohn
you can switch the order of $A$ and $B$, it won't change that ratio
 
Srijan M.T
Srijan M.T
@robjohn Ok.
 
robjohn
robjohn
10:26 AM
You have to use the same order when you compute $\Delta x$ and $\Delta y$, however.
 
Srijan M.T
Srijan M.T
Aah ok.
Ok then. See you later sir.
 
robjohn
robjohn
night
 
soupless
soupless
10:38 AM
Hello
 
soupless
soupless
11:01 AM
Can I ask if these chat rooms are calling MathJax or is it just mine?
 
robjohn
robjohn
11:13 AM
@soupless you can use the bookmark in any room
you just have to run it in each room you want it, and after you reload the page
 
soupless
soupless
@robjohn I mean I didn't use it yet, but the maths just start rendering
Even after reloading the page
 
robjohn
robjohn
you must be using something else. It doesn't render without something additional
what browser?
 
soupless
soupless
I installed Tampermonkey, but it doesn't have anything
@robjohn Google Chrome.
 
robjohn
robjohn
I am pretty sure that Chrome does not render MathJax automatically
 
soupless
soupless
Oh. I found it. It is an extension called 'TeX All the Things'. I am so sorry. I was just really scared.
I have it disabled, but I don't know when I enabled it.
 
geocalc33
geocalc33
11:56 AM
@robjohn do you know what the area enclosed by $\log^2(x)+\log^2(y)=1$ is?
 
Monty
Monty
Guys im looking for a result which gives me uniform convergence of a sequence of functions taking values in a metric space.
Basically Arzelà–Ascoli
 
soupless
soupless
@geocalc33 All I know is just the minimum and maximum for $x$ is $1/e$ and $e$, respectively. Similar to $y$
 
soupless
soupless
12:28 PM
@geocalc33 I tried to solve it, assuming that you referring to $\ln x$. I think it is $\left(\dfrac{e^{2}-1}{e}\right)^{2}$
Maybe just ignore it. It has a high chance of being wrong
 
Srijan M.T
Srijan M.T
12:55 PM
Guys m if we notice here. The red line.
Above the summation symbol , It should be N-1.
Because where they xi , end value is b-delta x. =(a + (N-1)delta x)
Pls confirm
 
user863565
user863565
1:50 PM
I want a gyroscope grill
 
robjohn
robjohn
@geocalc33 I get $\sqrt2\pi I_1(\sqrt2)=2\pi\sum\limits_{n=1}^\infty\frac1{2^nn!(n-1)!}=3.995237067748030317529759897$
where $I_1$ is a modified Bessel function of the first kind
The sum is a better form, in my opinion.
 
geocalc33
geocalc33
2:15 PM
why do you prefer the sum? @robjohn
 
Monty
Monty
2:31 PM
Does anyone know if this theorem also gives uniform convergence of a subsequence ?
im trying to reconcile it with en.wikipedia.org/wiki/…
 
user2103480
user2103480
@Monty Can you specify what the sets mean there
What is the space that the u_n have values in
sigma is the topology I guess?
 
Monty
Monty
a topological space
equipped with a metric d
and topology sigma
sigma induced by $d$ I believe
I thought Ascoli-Arzela was all about getting uniform convergence ( and have seen people quote this exact theorem to get uniform convergence ) but when I read the theorem I only see pointwise convergence...
Its driving me crazy for a couple days now
 
user2103480
user2103480
Why do they write sequentially compact
it's just compact in a metric space
Ok, it's equivalent, still
 
Monty
Monty
exactly
and it is a metric space.
 
user2103480
user2103480
I also don't see how exactly uniform convergence follows. Maybe it's buried in the proof?
 
Monty
Monty
2:39 PM
did you see the wiki link
 
user2103480
user2103480
yeah... uhh
 
Monty
Monty
the title non-continuous functions
 
user2103480
user2103480
look below
this isn't supposed to be continuous so uniform convergence cannot be the case
 
Monty
Monty
wait what?
 
user2103480
user2103480
(if u_n are continuous themselves, which should be a special case of the theorem)
Cannot was badly phrased, but I think discussing uniform convergence is missing the point. I don't think the intention is getting uniform convergence out of it. The point of uniform convergence is getting a continuous function from a sequence of continuous functions
And here the theorem gives a continuous function (up to a measure 0 set) anyways
 
Monty
Monty
2:44 PM
I needed uniform convergence for my own purpose
If I combine the two theorems
dont I get uniform convergence of a subsequence u_n ...
 
Mike Salaru
Mike Salaru
3:01 PM
Hi guys, Could you please verify my answer
answer :
 
robjohn
robjohn
@geocalc33 I don't know. I never studied Bessel Functions, so I only know them as sums, so why not just use the sum. Also, there are just so many Bessel Functions, it's hard to keep them straight.
That sum converges very quickly, also.
In any case, it is quite a bit less than soupless' answer
 
Rover
Rover
3:19 PM
If a>0,b>0,c>0 and a+b+c=and, then at least one of the numbers a,b,c exceeds......
 
robjohn
robjohn
and
 
leslie townes
leslie townes
bessel functions are like bernoullis. too many to keep straight.
 
Rover
Rover
@robjohn any hints?
 
leslie townes
leslie townes
or gauss's theorems.
 
robjohn
robjohn
@leslietownes I know where the Bernoulli polynomials come from. I use them with Euler-Maclaurin Summation
 
leslie townes
leslie townes
3:21 PM
which bernoulli? without looking it up.
 
robjohn
robjohn
Do you mean which Bernoulli as in which person?
 
leslie townes
leslie townes
yeah. i hate quizzing people, it's jacob, but it could have been any one of them.
i always wonder what it would be like to have a famous math name in a math class. like what if your last name was gauss. imagine the stuff you'd get from your classmates.
i wonder if names go out of style because of that. like, a positive version of the phenomenon that adolf isn't a very popular name anymore.
"i'm sorry, i went through too much, i'm not naming my kids einstein."
 
Rover
Rover
If we consider a>b>c
We can say a+b+c>3c ----> abc>3c -----> ab>3
--a>b--
 
soupless
soupless
Hello again
 
copper.hat
copper.hat
that's why i changed my name from boole.
 
Rover
Rover
3:29 PM
aa>ab
 
robjohn
robjohn
@Rover you say "a+b+c=and", what does that mean?
 
soupless
soupless
Can I ask about the graph-like figure when clicking the 'room' link?
 
Rover
Rover
@robjohn did I, oh sorry that's a+b+c=abc
@robjohn It became autocorrect
 
leslie townes
leslie townes
when i was in law school i joked about what my dad, "senator [my last name]," would have said about something. the person asked what state. i said i was joking. i learned that his dad was a senator. i think he thought i was making fun of him, but i wasn't. just had very bad comedic luck.
 
robjohn
robjohn
@soupless a graph of the messages over time
 
copper.hat
copper.hat
3:30 PM
that's funny :-)
 
soupless
soupless
@robjohn Is it the number of messages/ activity?
 
leslie townes
leslie townes
i mean what are the odds? very low.
 
copper.hat
copper.hat
its so much safer to make jokes in a more homogenous country
smaller more homogenous country
 
leslie townes
leslie townes
i think that's the problem. i've inherited a comedic tradition that doesn't suit my current environment.
my grandfather was something else. he was an insult comic with a heart of gold. he loved just trashing on people that he just met, and they loved it too. he was asked to give speeches at graduations and funerals and stuff. people couldn't get enough of him.
it was exasperating for his wife.
 
anakhro
anakhro
@robjohn are you at all familiar with basic differential forms stuff on Riemann surfaces?
 
copper.hat
copper.hat
3:33 PM
my in-laws in-laws have a few kids,the same family has a billy and a william. when i was introduced i burst out laughing thinking it was a joke...
 
robjohn
robjohn
@anakhro very, very rusty. Better to ask Ted.
 
anakhro
anakhro
My beloved Ted.
 
copper.hat
copper.hat
def need to work on my cultural sensitivity.
 
leslie townes
leslie townes
Saint Ted, patron of wayward math students.
 
copper.hat
copper.hat
have some other good such stories, but they cannot be told here.
 
leslie townes
leslie townes
3:34 PM
Father Ted, maybe.
 
copper.hat
copper.hat
:-)
captures the reality pretty well
 
soupless
soupless
Also, another question. I am answering a homework about integration (the very basic ones, basic integration by substitution, in particular). My question might be inappropriate, but is it "Let $u = \ldots$. Then, $du = \ldots$." or my wording is bad?
 
leslie townes
leslie townes
i'm more of a Bishop Brennan.
 
copper.hat
copper.hat
:-)
stupid windoze update. excuse me.
 
leslie townes
leslie townes
soupless, i think that sounds fine. it's weird that there isn't a notational convention about this.
i had an instructor who would do something as follows
 
Rover
Rover
3:36 PM
@robjohn any idea?
 
leslie townes
leslie townes
integral = <large brackets with substitution u = blah, du = blah, or v as well with integration by parts>
newline, [the result].
and then further = whatever on new lines.
it was not optimal but i tended to use that when i taught.
if i were writing in prose i'd probably do what you did.
 
robjohn
robjohn
@Rover so far you've gotten that $ab\gt3$, what does that tell you?
 
soupless
soupless
@leslietownes Oh. Is it like "proof is left in the reader", but not stated?
 
copper.hat
copper.hat
that was quick.
 
robjohn
robjohn
@copper.hat they just needed a bit of windex
 
Rover
Rover
3:38 PM
@robjohn what ? a>b aa>ab a>(3)^1/2
 
leslie townes
leslie townes
it's just a tough question of presentation. often in elementary math classes you want to present things as series of equations. not a mishmash of equations but LHS = RHS1 (for reason x), newline = RHS2 (for reason y), newline RHS3 (for reason z). and substitution has this thing where, you do have to do computations separate from the line of reasoning to support it.
it invites chaos and confusion.
 
copper.hat
copper.hat
:-)
 
leslie townes
leslie townes
and the usual presentation style for students in introductory math classes is just, equations all over the place. if you end in 0 = 0 you know you got the right answer.
 
soupless
soupless
@leslietownes Ok, got it. It's either the solution is very elaborated or just like "proof is left to the reader" or "the solution is your assignment/homework". I can't do the last two since it will be my teacher who reads it, so I will have to go do the first one
 
leslie townes
leslie townes
if demonstrating work for an instructor, ideally, all of the computational stuff should be included, even if it is "boring" and not really the point.
 
robjohn
robjohn
3:42 PM
I remember giving a seminar at Princeton and I was talking about $A^p$ weights, and I was talking about the quality of being such a weight, and only once did I say "A-p-ness"
2
 
leslie townes
leslie townes
not because it's a great way of presenting math but because some math instructors are captious
 
robjohn
robjohn
I am sure I turned completely red
 
leslie townes
leslie townes
that's funny. in my multivariable calc class the instructor kept saying "F u," "F u," "F u," over and over. part of it was a language barrier. the class was in stitches. i emailed him to tell him what it was about. he thanked me.
 
soupless
soupless
@leslietownes Yes, that is certainly true.
@robjohn I almost r/wooshed myself, but then I got it
 
robjohn
robjohn
@Rover The last one looks like a good one
@soupless yes, it helps if you read it out loud
 
leslie townes
leslie townes
3:45 PM
someone next to me kept a tally of how many times he said it. it was over 10 times.
 
soupless
soupless
@robjohn I did this which is weird because I really don't have an idea: $$\int_{\frac{1}{e}}^{e}\int_{\frac{1}{e}}^{e}\left[(\ln x)^{2} + (\ln y)^{2}\right]\,dx\,dy$$
 
leslie townes
leslie townes
it was some chain rule thing, F(u,v) with u and v functions of other stuff. i'd say F OF u, v. and be sure to say the v shortly after.
 
soupless
soupless
@leslietownes Well, if you really say it over and over, the 'of' vanishes
 
leslie townes
leslie townes
well, to protect young ears and young minds, it ought not to.
we've reached the moment of the morning where my wife asks me to turn down my doom metal. "but i can't hear the bass if it's not this loud," i say. she wins every time.
 
robjohn
robjohn
@soupless The area that was in question was this one.
But this was my favorite one.
 
soupless
soupless
3:53 PM
@robjohn I apologize. I took it without any context
 
robjohn
robjohn
@soupless No need to apologize.
 
soupless
soupless
@robjohn But will it work though?
 
robjohn
robjohn
@Rover when they are equal you get $a=b=c=\sqrt3$, so I would bet that is the minimum of the maximum
from experience in calculus of variations
 
soupless
soupless
@robjohn Huh? Sorry, I don't understand what you are saying
 
robjohn
robjohn
if $a+b+c=abc$ and $a=b=c$ then $a=b=c=\sqrt3$
if all three are less than $\sqrt3$, I bet you can show that the sum is greater than the product
 
soupless
soupless
4:01 PM
I think @Rover should be the one
 
robjohn
robjohn
@soupless crap, sorry
 
soupless
soupless
@robjohn No need to apologize. :)
 
robjohn
robjohn
@soupless did you watch the undulating triangular torus?
 
soupless
soupless
Yes, it is so mesmerizing
 
robjohn
robjohn
it is.
you feel sleepy...
very, very sleepy...
 
soupless
soupless
4:04 PM
You feel like your head will hurt, though it was worth it
 
leslie townes
leslie townes
i like watching eversions of the sphere.
 
Akiva Weinberger
Akiva Weinberger
4:53 PM
Every planar cut through an ellipsoid forms an ellipse
@leslietownes I put together a playlist of sphere eversion videos
It's not just that video (Outside In)^, there's other videos in it too
And if you like equations in your math, you can find a completely analytic description here: arxiv.org/abs/1711.10466
 
leslie townes
leslie townes
oh that's really cool. i love outside in, i think it's my favorite.
and i do love equations in my math. awesome. thanks.
side note, witold bednorz sounds like the name of a character in an epic poem.
i never interacted much with steve smale but once i left my keys in an office we were both talking to someone in and he brought them back to me. so i like him for that. the math is cool too.
it's not every day a fields medal winner brings you your keys.
 
Akiva Weinberger
Akiva Weinberger
Didn't realize he was still alive
(don't tell him I said that lol)
 
leslie townes
leslie townes
gosh, is he?
maybe he's like the prime number theorem people. granted decades of extra life for contributions to mathematics.
 
Edward Evans
Edward Evans
@leslietownes Am definitely Father Jack
 
leslie townes
leslie townes
sips toilet duck
 
Edward Evans
Edward Evans
5:07 PM
growls aggressively
 
leslie townes
leslie townes
i'm actually an improbable mix of bishop brennan and father dougal.
 
Edward Evans
Edward Evans
lmao
Father Ted is such good tv
 
leslie townes
leslie townes
one last time. these are small. but the ones out there are far away.
 
Edward Evans
Edward Evans
hahahah
 
leslie townes
leslie townes
small. far away.
i just remembered graham norton was in it. i loved his character, my wife hated him. he was deliberately annoying, which is a trait i prize but many do not.
 
Akiva Weinberger
Akiva Weinberger
5:12 PM
The One-Seventh Ellipse
 
leslie townes
leslie townes
that's insane. i love it.
 
anakhro
anakhro
Very cool.
 
leslie townes
leslie townes
kind of reminds me of the nine-point circle. could have been discovered in antiquity but wasn't.
Nine-point circle
In geometry, the nine-point circle is a circle that can be constructed for any given triangle. It is so named because it passes through nine significant concyclic points defined from the triangle. These nine points are: The midpoint of each side of the triangle The foot of each altitude The midpoint of the line segment from each vertex of the triangle to the orthocenter (where the three altitudes meet; these line segments lie on their respective altitudes).The nine-point circle is also known as Feuerbach's circle, Euler's circle, Terquem's circle, the six-points circle, the twelve-points circle...
 
123
123
5:29 PM
Hi All...
 
leslie townes
leslie townes
Guten tag und buenos dias.
 
123
123
Pls clear me. What is "exhaust set" in set theory?
 
leslie townes
leslie townes
i am not familiar with the term, with context maybe i could form a guess. also i am not a set theorist.
 
anakhro
anakhro
@123 can you use it in a sentence?
 
123
123
I have MCQs. Let me share
 
leslie townes
leslie townes
5:31 PM
that's a funny way of putting it. i wish i'd thought of that.
 
123
123
If set A and set B are subset of universal set then set A and set B are called.
a. Exhausted set
b. Equal set
c. Unequal set
 
leslie townes
leslie townes
is this a translation into english from another language? just curious.
 
Thorgott
Thorgott
wtf is a "universal set"
 
anakhro
anakhro
I assume they just mean a defined "universe" of all objects they are discussing.
 
leslie townes
leslie townes
the question as phrased doesn't make sense. i do sometimes see references to a universal set. it's when books don't want to be too formal about where anything is taking place. but exhausted set is confusing me.
 
123
123
5:36 PM
How can I share picture here?
The exact question is.
 
anakhro
anakhro
Just upload it to imgur and then paste the link here.
 
123
123
If A and B are subset of U such that AUB = U , then the set A and B are called
 
leslie townes
leslie townes
ok. i think i see a concept of exhaustion here.
this may be a language issue.
 
123
123
a. Exhaustive sets
b. Disjoint sets
c. Equal Sets
d. Unequal sets
 
leslie townes
leslie townes
of the alternatives, a seems the natural answer, but this is very nonstandard language. note that b, c, d, have nothing to do with the hypothesis of the question.
 
123
123
5:40 PM
Yes that's why I asked because b,c,d are not answer. But what is exhaustive sets here.
 
leslie townes
leslie townes
my guess would be exhaustive sets are sets whose union is equal to the "universal set" meaning the largest set under discussion.
 
anakhro
anakhro
A set of subsets is exhaustive (for U) if they cover (U)?
 
123
123
It means the correct answer is exhaustive sets?
 
anakhro
anakhro
Probably.
 
Thorgott
Thorgott
this is a language issue, not a math issue
 
leslie townes
leslie townes
5:42 PM
not knowing any formal definition, from english, to exhaust is to consume entirely, or to completely run out. which suggests, sets are exhaustive if their union is everything.
i agree with thorgott and i wonder if there's something that we're missing.
 
Thorgott
Thorgott
yes, extrapolating from context, a is the likely answer, but dont make us guess
 
123
123
This term used in model paper which was issued by govt. I also did not know that's why I asked
 
Thorgott
Thorgott
if this is from a book, look up the definition in the book. if the book doesnt define its terminology, get a better book. if this is from a course, ask your professor/ta.
 
123
123
Thanks all for the support.
 
leslie townes
leslie townes
if i may enunciate the Thorgott principle more clearly, it is that no well-posed question requires a guessing game. and if a question seems to need that, go back to the source and fix the problem at the source. inferences from external authorities are perhaps informative but may ultimately be irrelevant.
if i had to place money on a guess it would be a. but who knows.
 
123
123
5:48 PM
There is no definition for exhaustive set in the book neither any discussion.
 
feynhat
feynhat
Yo @EdwardEvans.
 
leslie townes
leslie townes
i can offer inferences but the instructor or TA would be able to be more conclusive.
 
feynhat
feynhat
Did Mike get married or something? I see an extra last name on his webpage.
 
copper.hat
copper.hat
i'm wondering what the exact definition of suddenly is in the california vehicle code where is says "No pedestrian may suddenly leave a curb..." not that i'm planning anything...
 
leslie townes
leslie townes
i assume something to do with jaywalking.
the CVC is a mess.
 
copper.hat
copper.hat
5:57 PM
presumably precedence & grumpy judge rules.
 
geocalc33
geocalc33
so you aren't allowed to suddenly run off the curb
 
leslie townes
leslie townes
one of the guys who left my firm had repeated run-ins with traffic authorities and constantly joked about forming a practice of appellate traffic law at our firm. the joke is that nobody would pay actual rates for that kind of advice. but there's a lot of wrong traffic stuff happening out there.
 
copper.hat
copper.hat
i'm joking really, it was in reference to the precise definition requirement.
 
leslie townes
leslie townes
i didn't suddenly leave the curb, i eased into it.
 
copper.hat
copper.hat
i wonder when whoever writes the text, do they think of such things.
 
leslie townes
leslie townes
6:00 PM
i glided away from the curb.
 
copper.hat
copper.hat
i did stop your honor, it was a borel measurable stop.
 
geocalc33
geocalc33
moonwalked off the curb
 
copper.hat
copper.hat
i mean, is continuity an assumption? the 'laws' of physics?
 
leslie townes
leslie townes
drafters of legislation tend to be people with law degrees but not legislators themselves and many do not have experience with litigating disputes. they are often under considerable time and lobbying pressure.
 
copper.hat
copper.hat
clearly i have work to do, this is a form or procrastination.
 
leslie townes
leslie townes
6:02 PM
according to einstein whether something comes to a stop is entirely arbitrary. the legislature has not provided a frame of reference, so i wasn't speeding when i went through the intersection. i was at rest in a different time frame.
 
geocalc33
geocalc33
you aren't allowed to intentionally, suddenly leave the curb
 
copper.hat
copper.hat
sure you are
 
geocalc33
geocalc33
it's against the law
 
copper.hat
copper.hat
if you are going on to the sidewalk?
sry, i've forgotten leslie's nice word for overbearingly nitpicky
 
geocalc33
geocalc33
oh I thought it was against the law or something
 
leslie townes
leslie townes
6:05 PM
captious?
it's a good one. lots of points in scrabble.
if you can land it on the right squares anyway.
 
copper.hat
copper.hat
captious
excellent word. will try to force it into my limited memory.
@geocalc33 i am just kidding.
please do not leave the kerb suddenly.
 
leslie townes
leslie townes
it's not a good idea, you can get hit by things, including trains. stay on the sidewalk, press the button, abide by rules and regulations.
 
Ted Shifrin
Ted Shifrin
I prefer capsicum.
 
copper.hat
copper.hat
i tried that on my knee for a few nights.
 
Ted Shifrin
Ted Shifrin
Curb/kerb is like aluminum/aluminium
 
copper.hat
copper.hat
6:07 PM
constant source of eyerolling in my house
 
geocalc33
geocalc33
I came across a word "synecdoche"
 
Ted Shifrin
Ted Shifrin
Literary term
 
copper.hat
copper.hat
its when you take a shower together
 
leslie townes
leslie townes
early wikipedia had so much stuff on weird words. it was overrun by people who were into words. you'd have entries having nothing to do with language, and there'd be like 20 links to "this word is a portmanteau of two other words, and a portmanteau is this olanguage thing."
 
anakhro
anakhro
"Synecdoche, New York" is an okay movie.
 
leslie townes
leslie townes
6:09 PM
my sister loves that film, it was blah to me.
 
copper.hat
copper.hat
when i grew up, i thought NY, NY was just an emphasis.
 
anakhro
anakhro
@leslietownes It was interesting, but maybe a little on the drier side.
 
leslie townes
leslie townes
the city so nice, they named it twice.
 
copper.hat
copper.hat
i thought Hawaii 50 was the police phone number.
 
leslie townes
leslie townes
haha
 
copper.hat
copper.hat
6:10 PM
we did have a windy phone
i had a pic of jack lord on my wall for many years
my mom saved it. it is still in our house i believe.
 
leslie townes
leslie townes
jack lord was among other things a not-too-great painter. one of my friends has a painting he did.
 
copper.hat
copper.hat
my dad sorta looked like him. same blue suits sometimes.
 
leslie townes
leslie townes
the story she tells at dinner is "you know that guy in hawaii 50? well he also painted this. it's a painting not a print."
and then a long awkward pause while people thought of what they might say.
 
copper.hat
copper.hat
if it was me i would burst out laughing
like with billy & william
omg
 
leslie townes
leslie townes
i asked how much she paid for it, and she didn't answer.
 
copper.hat
copper.hat
6:13 PM
in irish society (at least my level) there is no mercy whatsoever
you wither hide everything or just don't give a whatever :-)
she kept jack lord but got rid of my mathS books.
so pedestrians could legally stop traffic forever just walking back and forth across the intersection. i can't find any fairness clause in the CVS.
or CVC
top gear is doing a tribute to sabine schmitz on bbc ni in 15 mins.
 
leslie townes
leslie townes
i liked her.
 
copper.hat
copper.hat
awesome person.
and could she handle a transit van...
i'm feeling like today is going to be another zero day.
 
leslie townes
leslie townes
6:29 PM
i'm pinging people for stuff to do but i feel like the boat in 'das boot.' just, undersea, pinging, no response.
 
copper.hat
copper.hat
i am doing drudge work, my own choice/fault, but i never fully appreciated how much of what i did was internally motivated. as long as i keep going its good, but if i take a day's break the it can easily become a week's break...
 
leslie townes
leslie townes
i have more oxygen than the das boot guys.
 
copper.hat
copper.hat
oh wait, incoming scam call...
 
leslie townes
leslie townes
i was awoken this morning by the call of a peacock. we have feral peacocks in long beach. sometimes they're in our yard. i feel like the maharajah of something.
 
copper.hat
copper.hat
ahh, my friend susy with the vehicle service department
i like peacock/pheasant sounds. and foxes while we are at it
we had pheasant at some stage, if you like eating shot.
 
Rover
Rover
6:34 PM
@robjohn oh ok, then what will be maximum?
 
copper.hat
copper.hat
6:51 PM
what is the problem>
 
robjohn
robjohn
7:15 PM
@Rover Did you read any of the subsequent comments?
 
copper.hat
copper.hat
some version of a zero knowledge proof going on maybe...
 
Edward Evans
Edward Evans
@feynhat Hiya :)
 
copper.hat
copper.hat
@EdwardEvans do you watch top gear?
 
Edward Evans
Edward Evans
I did watch it yeah
Oh it's still going right?
 
copper.hat
copper.hat
yep, they had a short segment on sabine schmitz a short while ago (bbc ni)
i like clarkson :-)
obnoxious fellow though he is
 
Edward Evans
Edward Evans
7:27 PM
Yeah the show kinda died for me when Clarkson, May and Hammond left
Even though, as you say, Clarkson is a knob
but a funny knob
 
 
1 hour later…
Simple
Simple
8:42 PM
Let $\alpha:I\to S^2$ be a path. Supposeαis not surjective. Show that $\alpha$ is path homotopic to an injective $\beta:I\to S^2$
and $\alpha(0)\neq\alpha(1)$
Let $x_0$ be a point of $S^2$ such that it's not in the image of $\alpha(I)$, then $S^2$ is homomorphic to a plane. Consider $\gamma(s,t)=(1-t)\alpha(s)+t\beta(s)$ and $\beta(s)=(1-s)\alpha(0)+s\alpha(1)$ for all $t,s\in\,I$.
So,
$$\gamma(s,0)=\alpha(s)\;\;\gamma(0,t)=\alpha(0)=\beta(0)\;\;\gamma(s,1)=\beta(s)\;\;\gamma(1,t)=\beta(1)=\alpha(1)$$
this is what i currently have, but it's still not right I believe
 
Taufi
Taufi
If I am not mistaken the double sum $\sum\limits_{k = 0}^{n}\frac{k}{k!}\sum\limits_{j = 0}^{n - k} \frac{(-1)^j}{j!}$ is the coefficient of the $n$-th component of the product $(\sum\limits_{k \geq 0} \frac{k}{k!}x^k)(\sum\limits_{j \geq 0} \frac{(-1)^{j}}{j!}x^j) = xe^{x}e^{-x} = x$. But this would mean that the original double sum is 0 which is not correct. Where's the error?
 
Thorgott
Thorgott
9:00 PM
@Simple you're being sloppy, but the idea is correct
@Taufi the $n$-th coefficient should be $\sum_{j+k=n}\frac{k}{k!}\frac{(-1)^j}{j!}$
 
Simple
Simple
do you mind give me a suggestion to improve it
 
HereToRelax
HereToRelax
@EdwardEvans yeah that can happen when you change 100% of the cast
they have a new show on jeff bezos site tho
 
leslie townes
leslie townes
9:48 PM
funny knob is a good description.
i don't think i'd like to know him in real life, but fine on TV. i hope he has minders that keep him from bothering too many people.
like the team that i've got.
 
HereToRelax
HereToRelax
One time they made a show talking about a mexican car
and some people I knew got mad
Also one time they made a show in argentina and their car had plates 1992
1982
 
leslie townes
leslie townes
oh, i remember that.
the problem with his brand of humor is more i think what people are afraid of than what is on screen. he's a little boorish and the concern is that people who see the show will use it as some kind of license to become more boorish. these concerns are mostly unrealized or not the fault of the show.
and, it's obvious that if you get mad at it you're feeding into exactly what they want. so why be bothered.
 
HereToRelax
HereToRelax
I didn't really mind it
 
leslie townes
leslie townes
because i'm not a bull, i don't have to run at every red flag, no matter how hard someone is waving at me. particularly if my looking at the flag is my own choice. if i were making a list of problems in the world, "top gear" would not be in the top 1000.
 
HereToRelax
HereToRelax
I liked the show but I'm not into cars anymore
 
leslie townes
leslie townes
9:57 PM
i've never been into cars. i liked the segment where they'd have people 'race' in a reasonably priced car. kristin scott thomas did a really good time in a honda civic.
 
HereToRelax
HereToRelax
I don't feel like I would be able to make a list of the top 1000 problems in the world
 
copper.hat
copper.hat
i can understand why some folks get mad at stuff, we all have some (often justifiable sensitivities), but it seems a pity to aim towards a bland world of polite yawns.
you can always tell an irishman, but you can't tell him much.
 
HereToRelax
HereToRelax
I'm more interested in impolite yawning
I don't think I've ever seen it
 
leslie townes
leslie townes
copperhat i think we have similar disinclinations relating to sensitivity. although as un-PC i think that i am i did once almost yell at somebody and leave a dinner because of a joke i didn't find funny. we all have tripwires, but it's no fun to live in a world full of them.
i can just leave the dinner.
 
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