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Just when I thought I was out, they pull me back in
3h

comment 
What are some correct results discovered with incorrect (or no) proofs?
The previous comment from @S.C. makes no sense to me 
3h

reviewed  Leave Open The functional $L(\varphi)=\int_0^{2\pi}\frac{\sqrt{1\varphi^2(\varphi')^2}}{1\varphi^2}d\theta$ 
4h

reviewed  Leave Closed Proof the monotonic of a iterated function equation 
4h

reviewed  Close How plot in logiciel R 
4h

reviewed  Reject Where is the Erdős–Rado theorem stated in Erdős and Rado's Bull AMS paper? 
4h

comment 
Projective tensor product of the Banach space of discontinuous functions
You do realize that the projective t.p. of C(X) with C(Y) is usually not isomorphic to $C(X\times Y)$? As @EricWofsey says, why would you expect this result to be true? 
16h

comment 
Collaboration or acknowledgment?
There was some discussion of the HL "axiom" #4 at academia.stackexchange.com/questions/5179/… and I think people geting irate here might care to read or contribute to the academia.SE thread 
18h

comment 
Question on viscosity solution through stochastic differential equations
Could you add some more explanation of how this article answers the question? 
1d

reviewed  No Action Needed The best text to study both incompleteness theorems 
1d

comment 
solve russell paradox
Moreover, MathOverflow is not a place for you to announce your own ideas or ask people to check your ideas. See mathoverflow.net/help/ontopic 
1d

comment 
solve russell paradox
There has been a lot of work on set theory and type theory since Russell formulated his paradox, and so it is unlikely that one will come up with a new approach. 
1d

reviewed  Looks OK Looking for interesting, natural models of this algebraic theory in which $x^\dagger$ is not always the multiplicative inverse of $x$ 
2d

comment 
Does the Diophantine equation $(x^2+ay^2)(u^2+bv^2) = p^2+cq^2$ admit a complete solution?
The original question is asking for a way of producing all of the solutions. Your answer does not explain why your formulas will produce every possible solution 
2d

comment 
Reference request: automorphism of abelian $p$groups of rank 2
Given the structure theorem for abelian groups, it should not be too hard to count automorphisms by tracking where one sends generators of the cyclic factors of P. This seems to me like it should be a straightforward exercise 
2d

comment 
Reference request: automorphism of abelian $p$groups of rank 2
Where did you see these results stated? Have you looked in the list of references? 
Dec 25 
reviewed  Close How to calculate the center of a regular polygon? 
Dec 25 
reviewed  Leave Closed Is this a linear space? And if so, what's its dimension? 
Dec 25 
comment 
Blood type frequency given probability
Dear caters, this site is geared towards research in mathematics, not research using mathematics 
Dec 24 
comment 
How is the shape of $A+R+T$?
@AliTaghavi if you read the literature on Ktheory and Ext for Cstar algebras you will see that this is not quite the same as the Yonedatype Ext that you have defined. Page 1 of the RosenbergSchochet article shows this 
Dec 24 
comment 
How is the shape of $A+R+T$?
@WillSawin IIRC, the Cstaralgebraists' versions of Ext are not quite the same as the Yonedatype definition for the category of kalgebras, say. 