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
88
votes
10answers
9k views

Coping with abstract duplicate questions.

Any longtime reader cannot help but notice that we get many abstract duplicate questions, e.g. this recent question on partial fraction computation, which is not essentially different from many other ...
37
votes
3answers
1k views

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 ...
37
votes
0answers
519 views

Encouraging duplicate hunters

There are more and more duplicates on this site, but sometimes it is time consuming to find an earlier source. Now, there is a variety of moderation badges for editing, voting, reviewing, raising ...
33
votes
0answers
346 views

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),\...
30
votes
4answers
480 views

Voting to close as duplicate without taking the time to check if they are

This question has 4 votes to close as being an exact duplicate of this one. Within an hour of the question being asked, someone voted to close it as an exact duplicate AND Davide Giraudo pointed out, ...
29
votes
1answer
649 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 ...
27
votes
5answers
780 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 ...
27
votes
1answer
337 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 ...
27
votes
1answer
509 views

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 ...
27
votes
1answer
2k views

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 ...
25
votes
1answer
1k views

Why do high rep, long time users answer duplicate or too similar questions on book recommendations?

Way too many duplicates to Selecting the Real Analysis Textbooks, Recommend a statistics fundamentals book, What is the best book to learn probability?! I feel that too many book recommendations ...
25
votes
1answer
502 views

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 ...
25
votes
1answer
679 views

Why do obvious duplicate questions on MSE get upvoted, answered, and their answers upvoted?

The title is the question: why do obvious duplicate questions on MSE get upvoted, answered, and their answers upvoted? And what can be done to prevent this? Here is an example: https://math....
24
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, "...
24
votes
0answers
371 views

questions asked over 100 times

I just saw another question with the limit of $(1 + 1/n)^n.$ A few months ago, somebody asked some other multiple repeat question, I wrote to check any of the last 137 times it had been asked. he ...
23
votes
2answers
725 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 ...
23
votes
2answers
394 views

A hierarchy of duplicates - which questions generalise other questions?

I think the site would benefit from a hierarchical structure to the duplicate question functionality, indicating which questions generalise others. I was contemplating duplicate questions last night ...
23
votes
2answers
434 views

Should we close questions asking for hints as duplicates?

This question was inspired by this question Relationship between $\operatorname{ord}(ab), \operatorname{ord}(a)$, and $\operatorname{ord}(b)$, which I first came across while reviewing close votes. ...
21
votes
1answer
303 views

“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 ...
21
votes
3answers
929 views

Should duplicate questions be deleted?

Lately, I came across several suggestions for deletion of questions simply because they are duplicates. In my opininion: If the question is somehow a bad question, then it ought to be deleted, and so ...
21
votes
1answer
868 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 ...
20
votes
1answer
304 views

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.
19
votes
1answer
352 views

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 ...
19
votes
2answers
498 views

Should we have a canonical question on transitive / symmetric / reflexive relations?

It seems that we fairly regularly get elementary questions of the form: "Does a relation that is [A] and [B] have to be [C]?" where [A], [B] and [C] are some permutation of "...
18
votes
1answer
1k views

I voted mistakenly to close as duplicate. When I realised my mistake, my comment explaining why was deleted.

I refer to this question: Comparing logarithms with different bases. Over-hastily, I flagged it as a possible duplicate of How to compare logarithms $\log_4 5$ and $\log_5 6$?. I also thought it was ...
18
votes
2answers
438 views

Flagged duplicate “Does this answer your question?” text is misleading

Here's at least the second instance in which I have flagged a question as a duplicate, and the canned comment text "Does this answer your question?" elicits from the author of the duplicate question a ...
18
votes
0answers
384 views

Should duplicate PSQs be closed as duplicates?

Usually once or twice a day in the close queue, I find a question that is a PSQ (Problem Statement Question) and also a duplicate. Sometimes another reviewer explicitly links to the dupe, other times ...
18
votes
1answer
337 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 ...
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 ...
17
votes
2answers
334 views

Why are there requirements for duplicated questions?

Today I found a questions to be a duplicate, and I even remembered that I gave an answer to the non-duplicate. As I tried to close the duplicate as a duplicate, it told me I can't choose the question ...
17
votes
1answer
319 views

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, ...
16
votes
2answers
627 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. ...
16
votes
1answer
275 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 → ...
16
votes
2answers
274 views

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, ...
16
votes
0answers
105 views

Request: When closing a question as duplicate, to show all the linked questions

When people post "This question is a duplicate of XXX", would it be possible for the selections shown when we decide to close a question as duplicate, to also show XXX? This could be easily done by ...
15
votes
7answers
1k views

The duplicate thread

This thread is intended to help with closure of duplicates. The main use case are situations where a first attempt at duplicate closure was not successful.1 The creation of this thread was decided ...
14
votes
2answers
488 views

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 ...
14
votes
1answer
442 views

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 ...
14
votes
1answer
441 views

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 (...
14
votes
0answers
462 views

How to quickly find duplicate questions which are not exact duplicates.

Some moderators are able to find duplicate posts which are not exact duplicates. That is to say even in the case where the question is posed completely differently but the solution uses similar ...
14
votes
0answers
197 views

Marking questions as the originals for duplicates

When a question is closed as a duplicate, the ideal result is presumably that the questioner, potential answerers and future visitors will head off to the linked question and that any new answers will ...
14
votes
0answers
247 views

Should a closed question be reopened if it gets a duplicate?

This question How do you prove that $n^2-1$ is composite when $n>2$? was closed as a duplicate. That was the right outcome, as opposed to, you know, "off-topic." But the question it's a duplicate ...
13
votes
1answer
427 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.
13
votes
5answers
251 views

What to do with a newer post and a related, older, less thorough post?

Let me give a specific example. Today, I answered this post, and my answer seemed familiar. Looking through my old answers, I found that I'd answered this post a while back. The older post is a less ...
13
votes
2answers
398 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 ...
13
votes
1answer
434 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 ...
13
votes
1answer
184 views

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 ...
13
votes
1answer
362 views

What to do with duplicates of deleted questions?

There are 109 questions that are closed as duplicates of deleted posts. This SEDE query lists all such posts. Can we do something about these posts? One question is on its way to be Roomba'd and some ...
13
votes
0answers
493 views

Asking a question which is pretty much a dupe

I want to ask a question, but it is basically a duplicate of a (5 year old) question already asked here and that question doesn't have an answer. Morally, any good answer to that question would be an ...

1
2 3 4 5