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Feb
1
reviewed Reject RSA Prime factorization for known public and private key
Feb
1
reviewed Looks OK slightly tricky integral
Feb
1
reviewed No Action Needed What does “Arrows are more important than objects” really mean?
Feb
1
revised How to prove that $\mathbb{Q}$ ( the rationals) is a countable set
Add link in Cantor Cantor–Schroeder theorem.
Feb
1
reviewed Leave Open How can you prove this set theory statement by contradiction
Feb
1
reviewed Reviewed Are the integers closed under addition… really?
Feb
1
reviewed No Action Needed Is the modulo operation a standard mathematical operation which actually means Euclidean division?
Jan
31
reviewed Approve Compute $\int_0^\infty\frac{\cos(xt)}{1+t^2}dt$
Jan
31
reviewed Approve Prove $\int_{0}^{\pi}\frac{x^2}{\sqrt{5}-2\cos{x}}dx=\frac{\pi^3}{15}+2\pi\ln^2{\left(\frac{1+\sqrt{5}}{2}\right)}$ without contour integration
Jan
30
reviewed Approve Elementary properties of closure
Jan
30
revised What is the Frechet derivative of $(u^+)^q$?
LaTeX title.
Jan
30
revised A Tricky Limit: $\lim \limits_{x\rightarrow 0} \frac{9^x-5^x}{x}$ without L'Hospital
added 98 characters in body
Jan
30
reviewed Approve Prove a square can't be written $5x+ 3$, for all integers $x$.
Jan
30
reviewed Approve How to distinguish vector space from $k$-algebra?
Jan
30
reviewed Approve Closed invariant subspace problem
Jan
30
reviewed Close Biholomorphism between 2 non simply connected domains
Jan
30
reviewed Approve Differential equations, integral equations
Jan
30
reviewed Approve Given a Banach space $X$, are weak$^*$ bounded subsets of the dual space $X '$ also strongly bounded (with respect to the usual norm in $X '$)?
Jan
30
reviewed Approve Linear transformation $\mathbb R^3$ to $M^{2\times 2}$
Jan
30
reviewed Approve Good textbooks on homological algebra