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### How can a proof-verification question be closed as a duplicate? [duplicate]

Consider a question of this type: “My task is to prove […]. Here's my attempt: […] Is my approach correct?” I've seen several questions like this being closed as duplicates. ...
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### What do you think is the largest problem facing Math.SE today (July 2015)?

I think it can safely be said that Math.StackExchange (and MathOverflow and perhaps some of the sister sites on the SE network) are the best resources for (English-speaking) people with objective math ...
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### 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, ...
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### 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 ...
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### Answering “is my approach correct” with a different proof

On this site it is common to see questions where OP asks if their approach or their solution to a problem is correct. Often, people answer these questions by providing their own entirely different ...
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### 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 ...