Effects of planned maintenance are still visible and the site is not working smoothly so far (at least at my place in northern part of India). Managed to do only 4 reviews from close queue.
Effects of planned maintenance are still visible and the site is not working smoothly so far (at least at my place in northern part of India). Managed to do only 4 reviews from close queue.
Let $y\in Y\subset \mathbb{R}^d$ closed and convex, $A,B\in\mathbb{R}^{d\times d}$ positive semi-definite matrices. Is the following true?
$$
\min_{y\in Y} y^TAy \geq \min_{y\in Y} y^TBy \Rightarrow A \succeq B.$$
here a high rep user is using a very powerful theorem "Pillai's theorem" to prove an elementary number theory problem and also there is a wrong answer. The OP has not provided any context or progress.
@ShubhrajitBhattacharya That is called “oneboxing” and surely a nice feature. On the other hand, it takes much more vertical space, which can be problematic if someone posts a long list of questions that should be handled.
@ShubhrajitBhattacharya Side note : I actually don't know the threshold between normal, high rep and HIGH rep user, so you can set it yourself. I voted to close all the questions above, and left comments on some questions.
Also the activity on CURED is low at this time because most users in CURED are from the other side of the globe, and they are in dreamland now.
@ShubhrajitBhattacharya This is exactly the way to do it. You will receive compliments from others in the evening today, the way you are going.
Also, sometimes we shouldn't state that high rep users have answered (this is an opinion), just to have a little bit of fun we should let users see this themselves and be surprised. Keeping some suspense, you see? It is fun.
@ParamanandSingh These are things fine on my side : all parts of reviewing are ok, I can access the moderator tools as well as the chat (you can as well, judging by the above). Is answering or seeing questions troublesome?
@TeresaLisbon: general browsing of site is ok. Most frustrating part is that the modal dialog for close vote which gives various close reasons takes long time to load (20secs or more) and sometimes fails to load
Anyway I did manage the 20 from close queue finally and trying to see if I can help in few closures needed here.
@ParamanandSingh Oh, I see. I don't face such an issue, actually. The close dialog opens and closes in the usual amount of time. But hopefully you can help with closures, starting from this which should be a duplicate somewhere.
The close vote queue is over 500. Please make efforts to bring it down. There are not enough active community moderators at this time of day.
Whoa! I saw 79 new posts in this chatroom, just now! Nice work everyone!
@TeresaLisbon The question is open for deletion. And note that William Elliot, the answerer, refuses to use mathjax, refused to use it or learn it throughout his time on this site.
@amWhy Oh, thanks for that. I will track this user. Interestingly enough, William hasn't answered the question, according to the comment the OP wants a step-by-step guide on the problem. I will see if I can meet OP somewhere else and talk to them, because that's wrong on both OP's and William's side.
And good luck for your trudge up the 79 posts, you will need it. And a heavy heart, very heavy.
This extended real line does not solve the problems. I suggest to vote to close/delete all posts referring to this. This only confuses and is mathematically - just wrong.
@ShubhrajitBhattacharya One thing to keep in mind is that we encourage users here restrict the number of close requests to about 12 per day, and similarly with delete requests. Every user is limited in the number of close and delete votes they can cast in one day, and we want to give other users opportunities to request close or delete votes, as well.
Also, @ShubhrajitBhattacharya, many of the users here in CURED also cast some of their close votes in the Close queue, and delete votes in low-quality review queue. So not many of has can address every request made here in one day.
@TeresaLisbon I would have liked a bit more effort from the asker, but I think reopening is okay and I voted. By the way, "question" ≠ "doubt" = "lack of belief". =)
@user21820 Thanks. Listen, it's reward not only for having an attempt, but for having the patience to sit with somebody and improve their question. That deserves plaudits. The user could so easily have ran off, but no , this one is different. Really happy.
@user21820 Thanks for the approval. We still need one more reopen vote. I myself will ask OP to delete the comments that are now blowing up, and I will delete my own and we are back to square one.
@user21820 Oh you know me : I will need an hour now to focus there. So I won't be here for some time. And dinner beckons as well, so thanks, and see you in short time.
@amWhy So @soupless is here , I spoke about CURED and sent the invitation. But the user has said they will spectate, so we will give them the space to do that and they can join on their own. But I appreciate you being friendly here!
@amWhy Aha, so you did not jump into the moving tide like me? Then again, I was swept off my feet when I saw this place for the first time, it's like the little generator in the corner of the basement that powers the eighty storeyed building above it.
So I jumped in . One of the best decisions I've ever made.
@TeresaLisbon No, I jumped in this chat when the opportunity came up. The precursor to this site became a "frozen chat", at a time I was pretty active on the site, and with @MartinSleziak's encouragement, user21820 and I and a couple of other users, went all out to get the chat up and running (2016-ish)
@amWhy That's nice, good that you had the patience. Unlikely that such patience will be seen, honestly I never had such patience myself. Anyway, back to the dredge with :
Hi, @amWhy! @TeresaLisbon sent me an invitation link, then I hopped into this room. If I may ask, this is a room where posts are discussed if it should be closed, things like that, am I correct?
@soupless Aha, the temptation was too much! Indeed, you can see the links above. I have attached questions which need to be closed, downvoted and deleted from the site (which one depends upon which stage it is in).
I believe you can do some of these with the reputation you have. On the rest, we can help you.
@soupless Only some posts are discussed, and some are actually reopened. More action happens in the review queues, which show all posts with a close vote, all posts with a reopen vote, and users reviewing can vote for keep, edit, close, etc., depending on the queue. So most of the action on this site happens apart from the CURED chatroom.
@soupless I had expected it. Tell me, who would not be excited to see this place? Only those wanting to gain reputation through unfair means will be unhappy, and we intend to make that the minority.
@TeresaLisbon I also wanted to include that we follow up to reassess after improvements are made, e.g., scrolling above, we reopened a question you suggested.
@amWhy I spoke at length about all the letters of CURED, and I even gave examples. Thankfully the reopen example was easy because the user whose question I reopened, well they visited my chat at the same time as @soupless was there to thank me. I am writing the answer to that question in conjunction with helping here (and in conjunction with listening to Moszkowski) at the moment.
@Peter It's gone now, but I had to change "number theory" to "elementary number theory." I cringe at the number of elementary number theory questions using "number theory" as a tag.
@user21820 Thanks for the information about that question. On your first : I think we could reopen, you know? From where I stand I'd imagine there's a counterexample, but I'd love affirmative statements for groups of small size, or of certain characteristic (maybe just abelian, or just cyclic groups). Wow, it sounds fun, this one, although I'd imagine literature will have it covered somewhere!
Note that while the context doesn't look large in size, I just think that this question is really special, and doesn't need much more than what was specified.
@Teresa There are a number of users who answered the first six of user21820 spot on collection of questions to delete. I'll try to remember them and share later.
@TeresaLisbon Ooh, this must be very late for you! Tell me, How does Sunday look? I'm still in 3:00 pm Saturday, so any "heads up" about how sunday looks? ;D
@amWhy Pin drop silence. Not even the dogs in the lane outside are barking. A rare day. You need to wait a few more hours for "National black forest cake day", apparently!
Once again in the case nobody noticed my post above : We should counter posts with the extended real line. It makes users think that $\infty$ IS a number with this trick and division by $0$ is meaningful. This is utterly wrong. Every time , $\infty$ ocuurs (no matter at which level), this nonsense is repeated again and again.
Find all triples $(p, q, r)$ of primes such that $pqr = pq + qr + rp + 2021$. (Competition math class homework)
So far, I've figured out that one of the primes must be $2$ because of parity rules and how $2$ is the only even prime. Also, I've factored $2021$ as $43 \cdot 47$ but I'm not sure how ...
There's just a new answer to this, which shows "brute force" results, and one from a high-rep user giving a quite complete solution. I'm not sure how to best handle this, considering the OP states it is "Competition math class homework". For now, I've just added a comment noting the issue.
@JohnOmielan I downvoted the question and cast a vote to close it. Not terribly happy with the brute force answer. Too many answerers swoop in for the "kill" before we respond to the question. Thanks for posting this, @John.
$$2^x-3^y=2021$$
where $x,y$ are non-negative integers. I only found $2^{11}-3^3=2021$.
