Questions tagged [exact-duplicates]

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

Filter by
Sorted by
Tagged with
2
votes
0answers
77 views

Why does a question marked as duplicate get more views than the original?

As an example case, there's this question, slated to be deleted, which is marked as a duplicate of this question. Even though the latter one is more general and has been around longer, it has ...
2
votes
1answer
53 views

Could I flag a possible duplicate to a question asking for a proof when I had already asked about the correctness of mine?

That is, I asked before to check the correctness of my proof of that statement, and the correctness has been confirmed. Could I now flag a question asking for the proof of it as "possible duplicate" ...
6
votes
2answers
399 views

Should questions ever be marked a duplicate of another duplicate?

Should questions ever be marked a duplicate of another duplicate question? Specifically, I'm looking at these three questions, each one marked as a duplicate of the next: ?+?+?=30 (1,3,5,7,9,11,13,...
23
votes
2answers
702 views

How do you search for duplicates?

Sometimes I am really surprised how fast are the duplicates of new question found, given that we have vast amount of questions here. I hope posting this question here can be useful and can lead to ...
5
votes
1answer
106 views

Merging a migrated duplicate rejects the migration

Migrated questions get rejected if they are closed on the target website, with the exception of duplications. Earlier today I saw that a question was posted here and on MathOverflow simultaneously (...
30
votes
1answer
645 views

Is it acceptable to post a “better” version of an existing question?

Situation: Lets say there was an interesting question, but: It was poorly written (e.g. language, formatting, missing assumptions). It was posted many day ago but got only a few views. It received ...
2
votes
1answer
129 views

How to ask the question which aren't ask before

Many times when I ask a question I found that it blocked as it is duplicate. But I don't know which question is ask before. So how can I understand that the question is duplicate or not?? Please help ...
11
votes
0answers
337 views

Questions that show no effort to find existing similar questions a.k.a. abstract duplicates

EDIT: After amWhy brought the term "abstract duplicates" to my attention in the comments below, I thought some tidying-up was in order. The original body of the question is mostly intact below; I have ...
3
votes
0answers
155 views

Answers to obvious duplicates

What to do with answers to questions which are obvious and exact duplicates of existing questions? I'm talking about this review I recently did. The answer was to one of those limit/inequality/...
4
votes
1answer
160 views

Duplicate of unanswered question

I have read very similar questions, but not exactly this: a new question is a duplicate of an older question. However, when I try to flag, I get the message This question does not have an upvoted or ...
6
votes
0answers
103 views

How can I benefit from my question being marked as a duplicate?

My question got recently marked as duplicate, and I agree on it. I understand marking a question as duplicate as useful in the following sense: It keeps Math SE clean. It provides me with a kind of ...
2
votes
0answers
80 views

Closed as “Possible Duplicate” [duplicate]

This question was closed as a "Possible Duplicate," which confuses me because I've never seen that before once the question has been closed.
27
votes
5answers
770 views

What if the duplicate has a better answer than the original?

I have recently asked a question (The original did not turn up in my search): Show that there are infinitely many powers of two starting with the digit 7 which was marked as a duplicate of: Starting ...
13
votes
2answers
395 views

What to do with two old questions that are clear duplicates but not marked so? [duplicate]

Recently I stumbled on the following questions: 1. Proof that a trigonometric function of a rational angle must be non-transcendental 2. Is a trigonometric function applied to a rational multiple of ...
1
vote
0answers
55 views

Duplicate question on relation between gradient and Jacobian

I am a newbie to multivariable calculus so I am not sure whether I should be bringing this up on Math Meta or not but are these two questions duplicates and if so why they have not been marked ? ...
2
votes
1answer
72 views

Should I delete my question if I find out that it's a duplicate or near duplicate?

Should I find out (perhaps through the help of some other user) that my question or something very similar has already been asked, what should I do? Should I delete it? Should I post a pointer to its "...
3
votes
0answers
182 views

A few high quality duplicates

Suppose we have a small number of very close duplicates on some particular question. Suppose also that the questions are high quality and have high quality answers - at least, as measured by the ...
23
votes
0answers
1k views

Help me find an original for questions like “Why $(-1)^{ab} \ne [(-1)^a]^b$ when $a, b, \in \Bbb R$?”

There are many questions that boil down to "why is it not true that $(-1)^{ab} = [(-1)^a]^b$ (or $z^{ab} = (z^a)^b$) for $z \in \Bbb C$ and $a, b \in \Bbb R$ (or $\Bbb C$)?" and, respectively, "...
-12
votes
1answer
231 views

What's going on with my flag?

While waiting for Alex Gruber to recharge his batteries, the moderation is working slowly. For instance, on September 3 I've voted to close this question as a duplicate. I was certain from the very ...
15
votes
1answer
264 views

What's the difference between duplicate flag and close duplicate flag?

What's the difference between duplicate flag and close duplicate flag? When I want to flag something as duplicated there are two ways: Flagging as a duplicate: Flagging as should be closed → ...
3
votes
1answer
106 views

How should we handle cross-site duplicates?

There are some questions which are answered quite well by a nearly-identical question on another site (say, computer science's stack exchange, or math overflow). Should those questions get answers ...
1
vote
0answers
60 views

how to close a duplicate of a stackoverflow question? [duplicate]

The question Finding third side of a minimal triangle appears to be essentially a duplicate of https://stackoverflow.com/questions/22441855/triangle-circle-enclosing-a-set-of-points . The ...
0
votes
0answers
104 views

Are these two questions really duplicates?

First, I'd like to appologize if this similar questions were already made. I've tried to look for something similar and the nearest I found was this. I've even looked the two examples given in the ...
12
votes
1answer
480 views

How aggressively should we tag a question as duplicate?

Some questions seem standard and very likely to have already been asked. For example, a question on Prove Binet's Formula would almost certainly have been asked, even without referring to the links by ...
3
votes
3answers
477 views

What to do in case of unsuccessful duplicate close vote (or flag)?

Consider a situation when a user votes to close a question as duplicate (or flags it as a duplicate if they do not have sufficient rep to cast close votes), and then the post is not closed. If the ...
5
votes
2answers
346 views

What happens when I flag as duplicate?

What happens when I flag as duplicate? Usually they are closed by others, but sometimes I saw that the flag was helpful but nothing happened to the question. Are duplicate flags shown to some special ...
3
votes
1answer
157 views

Why my duplicate flag is declined?

Aren't these questions similar? Factorial Proof by Induction Question: $ \frac1{2!} + \frac2{3!} + \dots+ \frac{n}{(n+1)!} = 1 - \frac1{(n+1)!} $? Prove if $n \in \mathbb N$, then $\frac{1}{2!}+\...
17
votes
5answers
1k views

How close a match we need to close a recurring question as a duplicate?

An hour ago I closed a question as a duplicate of an, in my opinion appropriate, generic question. Two gold badge holders have since expressed disagreement with my decision, and the question has since ...
16
votes
2answers
624 views

This question is an exact duplicate of: Page Not Found

I stumbled upon this question which was marked as a duplicate, and rightly so as the OP had realised himself in their comment. Checking out the question that it's an exact duplicate of leads to this. ...
5
votes
0answers
120 views

How to find duplicates?

I am facing a basic problem: I do not know whether I am being silly or not, but often when I look at some questions, I feel that I have seen that before (if they have special structures like this one) ...
2
votes
0answers
85 views

Metrics for questions

Lately I had a case that one of my questions was marked "as an exact duplicate". Projection, rotation and skew-symetry in N-dimensional space Commutativity of projection and rotation But what the ...
12
votes
1answer
420 views

Is it okay to delete unanswered, marked as duplicates questions?

Just what the title says: I've had many questions marked as duplicates when I first started using this site, and I was wondering if it's okay for me to delete them.
7
votes
1answer
152 views

Exact duplicate doesn't require answer but claims one exists

This question was (rightly) closed as an exact duplicate: https://math.stackexchange.com/questions/1717381. (If I'm not mistaken, only moderators can do that.) The message at the top differs from the ...
1
vote
0answers
51 views

Should questions be marked as “duplicate” if answered before, but a possibly better/simpler approach now used?

How to prevent possibly better/simpler approaches to a previously answered question from getting buried as a duplicate question ? Number of ways to arrange identical coins in a ring
9
votes
2answers
201 views

Can one avoid gold badge superpowers by temporarily removing tags?

As described here, earning a gold tag badge has the side effect that one's votes to close questions in the tag as duplicates become immediately binding instead of going through the usual voting ...
16
votes
1answer
332 views

Meta-Meta question: Duplicate for previous question without actual real answer

So I was perusing the meta site, and I came across this closed link: https://math.meta.stackexchange.com/questions/20285/why-do-we-have-a-tag-called-stochastic-analysis The reason it was closed was ...
2
votes
0answers
118 views

Several questions, same problem, same user

I have searched Meta for several questions same problem same user. There were (1) quite (2) a few (3) related (4) titles, but these cover slightly different scenarios and do not seem to help here, ...
13
votes
1answer
432 views

Answering my own new and more detailed question rather than an existing one

Recently I have posted this question: Functions that preserve asymptotic equivalence. I searched MSE and MO sites for related questions before asking, but didn't succeed, my bad. After few days, I ...
1
vote
0answers
74 views

Closure as duplicate navigating in a circle

I was reviewing the close votes today when I came across this question , for identification purpose, lets call this $\mathbf{A}$. Someone had given it a close vote, marking it a duplicate of this ...
2
votes
0answers
77 views

Reopen-reclose request

Long ago, I asked this question. It was never a duplicate of this one, since the question was pretty different, and when the question changed it still had a different viewpoint, yet it was closed as ...
27
votes
1answer
323 views

Is it ok to edit questions that are closed as duplicates?

I think that duplicates can be useful for various reasons. In particular, they might help to find a question if a user searches for different keywords. Similarly, they might appear in autogenerated ...
21
votes
1answer
865 views

Question having excellent answer marked as dupe of a newer question

A high rep user who posted an answer to this question asked in 2014 marked my question asked in 2012 as duplicate. As such there is nothing wrong with flagging older questions as dupes of newer ones ...
7
votes
0answers
120 views

Appropriate way to place sound arguments when reopening a duplicate marked question

The possibility to reopen a duplicate marked question is a nice feature. This action is usually based (at least I do hope so) upon sound arguments. Is there a way to attach or combine these ...
5
votes
1answer
410 views

Totally similar questions are not closed for years

Today, recently viewed this post on combinatorics asking to prove the famous result "If $p$ is a prime, then $p|{p\choose k}, k\in \{1,2,\dots,p-1\}$". I was fairly sure that, It should have been ...
1
vote
0answers
58 views

Would like to dispute Duplicate Label-Chain Rule of Limits [duplicate]

I asked a question looking for a epsilon-delta proof for the Chain Rule of Limits, however the question was marked as a duplicate for a similar question but it does not provide the proof I was looking ...
5
votes
1answer
110 views

Which in case of duplicate questions should prevail? [duplicate]

Is there any routine to decide which one of the duplicate questions should prevail? The one which has been in existence the longest? It would probably not be good if both were accidentally shut down ...
9
votes
0answers
111 views

“Math Processing Errors” in the Close as Duplicate Preview

I see plenty of "Math Processing Errors" in the close as duplicate preview:
-12
votes
1answer
221 views

Is it against the rules to ask about a different proof for a proposition which has already been asked?

My question was marked as a duplicate by Did. I was trying to use a different proof involving continuity of measure and monotone convergence theorem for a question I asked before. I specified in the ...
0
votes
1answer
190 views

An older question was closed as a duplicate of a newer one

I have asked Extremals of functional $J = \int_{a}^{b} F(x, y, y^{'})$ question on December 21st 2013.. Now comes another question An MCQ for finding the extremal of the functional $J = \int_{a}^{...
5
votes
1answer
164 views

What is the difference between voting to close as a duplicate and flagging as a duplicate?

I am aware that to flag you only need 15 reputation points. Only users with 3k+ reputation can cast votes. If a post is flagged as duplicate, what happens then? In particular, what is different from ...