Linked Questions

How could I attach a PDF file through my questions? Excuse me for this question, but I have much trouble to do this! Thank you very much.

This question was put on hold. That was a most unfortunate decision: the accepted answer makes the unnecessary assumption that the base field is algebraically closed and invokes the absurdly ...

this post: 'How to Solve It: Add Your Heuristics' has been removed. I had an answer on it which made me 20rep, which I have now lost. But it wasn't my question, so why has my rep been lost?

I do not understand why this was unilaterally closed as unclear. Some of the comments and the screenshot here are inaccurate. This was the original post that was closed, that you can see: differs ...

What happened to my question asking about the following question? It seems to be deleted. Why if that is the case? Let $A$ be the ring of algebraic integers in a finite dimensional algebraic number ...

Recently we have seen quite a few instances of users editing questions that are closed to add their answers to the body of the questions themselves. That is a clear subversion of the rules and an ...

Now Undeleted I have a question deleted by Community due to RemoveAbandonedClosed. I tried editing it so that it becomes on-topic, and I casted "undelete" and "...

A little known feature of meta sites is that they can have a sidebar with a few most frequently asked questions: for example, Programmers Meta does. For a description of how it works, see FAQ ...

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 ...

Just a moment ago I answered a basic question that involved finding the derivative of $\sin(1/x)$. A comment hinted at the chain rule, the likely best way of going about it. I took my time to spell ...

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 ...

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 ...

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

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 ...

It happens that I proved an elementary result about the commutant (or centralizer) of a matrix; the result is elementary but nice and can be useful; the method is also elementary. my first reaction ...