Questions tagged [exact-duplicates]

This tag is referring to the process of identifying and closing questions that are exact duplicates of another question.

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Why were these questions closed as duplicates?

The question Need Examples to Understand Choice Function and Choice Structure is in no way a duplicate for the following question: (P(X),CR) may be a choice structure even if R is not a rational ...
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Clarification of what should be closed as a duplicate [duplicate]

Until today the word "duplicate" was clear to me, or so I thought, but I have just been confronted with the following situation: there is a question A from 2011 (with an accepted answer) and one other,...
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“marked as duplicate” by community?

A few minutes ago I flagged this question as a duplicate of an earlier one; when I came back to it, it showed as having been "marked as duplicate by Steven Stadnicki, Community". I've never seen the ...
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How should duplicate questions with more information be handled?

Suppose there is a question: How do you prove invariance of domain? which is answered in a complete, elementary manner. Now, suppose another question comes along ...
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spurious interaction between close votes for different reasons

This question had two close votes with reason "off-topic because ... missing details". I mistook it for a duplicate (of this question) and voted to close it for that reason, unaware that I'm now able ...
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What happens to otherwise good answers when their question is closed?

I answered this question the other day. It was one of those cases when I just happened to see it right as it was posted and it was a fun question that I knew something about. So I gave an answer (...
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Are question pairs of this type duplicates?

I have seen several people do this, and I've always felt awkward about it, but most recently the issue came up with this pair of questions. More generally, suppose we have two questions which are ...
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How to avoid duplications?

During the last two and a half years since I became a member of the SE community, it has happened so many times that my questions have been marked as duplicate, especially during the first few months ...
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Drawing attention to a question in another StackExchange site

I asked a question in CrossValidated Stack Exchange site because it deals with probability distributions. But it is a theoretical question (although I think it does not involve high-level maths). I am ...
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Large number of posts in the spirit of “How do I become good at Mathematics?”

There have been a steady number of questions being asked in the spirit of: Hi, I'm yada yada. Here's a short version of my life story and why I can't math. I currently only understand such and ...
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Automatically redirecting to the duplicate question

From the main meta site, I clicked on the question "How to export my favorite questions on stack-exchange as pdf? [duplicate]" and it immediately opened "Save the answer in PDF?". This is the first ...
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Migrated question appears same as an newer question; which one is the duplicate?

If point is zero-dimensional, how can it form a finite one dimensional line? (originally posted Dec. 27, 2014) was recently migrated here from physics.SE, although it already had answers. But on March ...
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Not marking question as duplicate?

An example This question was asked earlier today. The accepted answer by the user "mathlove" was posted within minutes of asking. Now consider this question. The user "mathlove" ...
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516 views

“Isn't this set countable” big list, and other abstract duplicate big lists

I'm sick and tired of seeing those almost the same, but usually not quite duplicate questions asking something like How is this set uncountable? We can put it in bijection with the natural numbers ...
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1answer
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Merged questions prevent deletion

Trying to cast a delete vote on https://math.stackexchange.com/questions/204765/show-the-negative-derivative-of-a-function I receive the message[1] When I view linked questions, I find there is ...
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1answer
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Duplicate of a deleted question

I just came across this question, and it made me wonder what the policy is for deleting questions which have duplicates pointing to them. I don't have any particular stake in this specific question, ...
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What if we have duplicates “outside MSE”?

What should we do if we have duplicate question on another site answered by those people and someone another asks it here(Suppose no one here has got any answer). Should I post the same answer giving ...
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How is a better comparison series is a duplicate of the question asking for the value of series?

Looking for a better comparison series for reciprocal of Fibonacci numbers is marked as duplicate of the question for the value of Fibonacci numbers. I don't see how it is a duplicate where it is ...
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Allow closing as duplicate for new questions

One of the changes to the closure system in the recent revamp was that to close something as a duplicate, the suggested duplicate needs to have an upvoted answer. I suppose that's a good thing when ...
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Duplicate shows as “on hold” in favourite list

Today, I favourited this question on my phone in order to hunt for a duplicate later. After the question was closed as a duplicate, I saw the following in my favourites list: As you can see, it is ...
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Improving the search system

When recognizing some questions as duplicates, sometimes it is difficult to find the original question one remembers. For instance, I recently saw a question asking to prove that $$\forall x\in(-1,1),\...
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How can I make sure the problem I want to ask has not been presented before?

e.g. I have a question on proving an inequality statement. If I google it Google will not recognize it and if I use Math StackExchange'search engine, it will not respond. Thank you for your help.
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3answers
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Making duplicates for only hints

Should we close questions asking for hints as duplicates? This above discussion is old, and is what I want to rediscuss in light of my question here: $\Bbb F_p$ where $p$ is an odd prime has exactly ...
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Closing question as duplicate of another question that has been put on hold

I think this has already been discussed somewhere, but I can't find where. As an example, this question was closed as a duplicate of this question. But the duplicate question was already been put on ...
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Whither the duplicate?

Ironically, I'll bet this question is a duplicate of other questions regarding duplicates, but I see little harm in sparking some new conversation here, even if we tread over old ground that many ...
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Duplicate Question Where Neither have *Complete* Answers

I just voted to close this question as a duplicate of this other one. However, I am unsure if this was exactly the right action to take, given that, though the latter question has an upvoted answer, ...
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LaTeX a jumbled mess when flagging as a duplicated

Is it normal for the LaTeX to be a jumbled mess when flagging as a duplicate? In case it isn't all systems, I am on a Linux system with Firefox 34.0.
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1answer
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Why isn't there any path from $A$ to $B$ when question $B$ is closed as a duplicate of question $A$?

Let $A,B$ two questions and suppose $B$ is a duplicate of $A$. Then (usually) $B$ is closed and a link to question $A$ appears in $B$. However, it may happens that $B$ already got a useful answer ...
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Almost-duplicates of closed PSQs

In this (now deleted) question a user asked about a homework problem (I assume), asking whether a particular approach to it would be valid. Almost immediately, someone voted to close as a duplicate ...
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Closing as a duplicate if the post contains OP's own proof/solution

It is generally agreed that good question should also indicate what the OP have tried. Many people do this and we receive many questions also contain the OP's attempted proof/solution for the question ...
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2answers
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Proof-verification and duplicates.

When someone posts a question, which asks for verification of their proof of something, the mathematical content of that question will often be a duplicate of another question. Now, in order to help ...
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2answers
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How to close a question as “This question already has an answer here”?

A question like this is completely solved in an answer to another question, but the questions themselves are not duplicates one to another. I've seen recently that some questions were closed but not ...
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1answer
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Of which question is this question duplicate?

This question "Direct proof that $\sqrt{2}$ is irrational?" is marked as duplicate. In other duplicate questions, there is a link to the original question but not in this question. So where is ...
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Should I delete the question that is similar to the others asked before?

For example, I asked this Is $\{(x,y)|y=\sin(\frac{1}{x})\}\cup(0,1)$ connected on $R^2$?, in the answer someone points out that a similar question was asked and discussed before. The title looks ...
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Same person has asked the same question 6 (!) times - what can be done?

I have flagged 4 exact duplicates yesterday https://math.stackexchange.com/users/flag-summary/86800 leaving only one version Integers and integer functions And today a yet another exact duplicate ...
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Escape brackets in titles of questions when voting to close as a duplicate [duplicate]

When you vote to close a question as a duplicate, the software automatically puts a comment looking like Possible duplicate of [Duplicate title](Duplicate link).. ...
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1answer
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How can this question be improved?

I would like to know how this question can be improved so that it can be reopened and receive further answers: https://math.stackexchange.com/questions/950520/math-problem-is-xyz-is-divisibleby-xyz I ...
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I think I made a bit of a mess, how to solve it

In a short time I asked three questions about more or less about the same subject: which surfaces have (for a large area) a constant negative curvature? "Hyperboloid like surface" as ...
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1answer
143 views

Triplicated question:

These questions are duplicate of each other: 940069 926118 913917 What should be done?
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1answer
170 views

A strange event about duplicate questions

Recently, a question was asking to prove two things, say theorem A and theorem B. Someone proposed to close the question, since there there were another question asking to prove theorem A with an ...
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1answer
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If the selected answer is a hint, should the person asking edit the OP with the full answer?

Sometimes, a hint is all it takes to answer a question. So if the person asking selects that question and no full answer was provided, should the "asker" edit the original post with a full solution? ...
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Is it reasonable to mark a question about the validity of a certain approach as a duplicate of a question that does not use that approach?

I have marked the following as being a duplicate: Is the $ L^1$ norm continuous in the following sense?. However, the OP asked about their approach, and seemed to be aware of the standard approach to ...
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1answer
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Original post marked as duplicate

I was just asked to review a question that was posted in 2010, and that has now been closed as a duplicate of a more recent post (this was closed in favour of this). Is it normal and/or accepted for ...
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Canonical answer for “x/0”?

Does a canonical answer exist for the question of $\frac{x}{0}$ that covers all the popular misunderstandings and problems? Can this question be considered the canonical reference?
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You want me to put the hammer down?

I have a small request to make about gold badge hammers for duplicates: If a question is migrated from another site, allow the first retag to be included in the tags whose gold members are eligible ...