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2d
revised downtime and Wald identity
added 6 characters in body
2d
revised Variety of proofs of a simple proposition in arithmetic
added 100 characters in body
2d
comment Number of ways to separate $n$ points in the plane
Probably one should seek a one-to-one correspondence between two arbitrary sets of points with no three colinear in a way that makes every set split off from one of them by a straight line corresponds to a set split off from the other by a straight line. One could wonder how many correspondences exist for a given pair of sets of $n$ points and whether that number is the same for all such pairs of sets of $n$ points. $\qquad$
2d
revised Number of ways to separate $n$ points in the plane
added 6 characters in body
2d
revised Show $\cos(x^2)/(1+ x^2)$ is uniformly continuous on $\Bbb R$.
edited body; edited title
2d
answered Variety of proofs of a simple proposition in arithmetic
2d
revised Derivative of improper integral.
added 17 characters in body
2d
answered Can you inverse a funcion by rotating it?
2d
revised Can you inverse a funcion by rotating it?
added 2 characters in body
2d
revised Prove that if $17 \not\mid n$, then either $17 \mid n^8+1$ or $17 \mid n^8-1$
added 5 characters in body
2d
revised Properties of finite ring
deleted 21 characters in body
2d
comment Aren't Legendre's conjecture and Andrica's conjecture same?
@DavidR. : BTW Wikipedia is explicitly intended to be a tertiary source including citations of secondary sources (and also primary sources). Wikipedia is not intended to be authoritative, but to enable you to find things that are authoritative. (Secondary sources can do something that primary sources cannot: they establish "notability". Riemann's original eight-page paper in which he states his famous hypothesis is a primary source, but it fails to establish notability, i.e. that mathematicians generally consider the topic noteworthy.) $\qquad$
2d
revised Disentangling $\int_Af(\mathbf{x})\ d\mathbf{x}$, using Fubini Theorem.
added 4 characters in body
2d
revised Equivariant generalization of $\mathcal{O}(1)$ on $\mathbb{CP}^1$
added 21 characters in body
2d
answered How to express an angle in terms of pi
2d
revised How to express an angle in terms of pi
added 8 characters in body
2d
comment How to prove $\dim(U)=\dim(W)=\dim(V)-1 \implies V=U+W$ based on the following assumption?
Your MathJax code was incredibly messy. I cleaned it up. $\qquad$
2d
revised How to prove $\dim(U)=\dim(W)=\dim(V)-1 \implies V=U+W$ based on the following assumption?
deleted 14 characters in body; edited title
2d
answered Prove that the sequence of combinations contains an odd number of odd numbers
2d
comment Prove that the sequence of combinations contains an odd number of odd numbers
"contains an odd number of odd numbers" is the same as saying that the sum is odd. $\qquad$