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Sep
23
reviewed Close Please help me find $\int e^{-x^2} dx.$
Sep
21
revised Which numbers have square roots in $\mathbb Q(\phi)$?
old title was misleading
Sep
21
reviewed Close Proof that absolute value of supremum equals suprememum of absolute value
Sep
19
comment A three variable binomial coefficient identity
@darij why, I already do (see par. 3 of 'Comments and thoughts' there)
Sep
13
reviewed No Action Needed Permutations of word 'mathematics'
Sep
13
reviewed Close Integrate $\int\dfrac{x \cos x+1}{\sqrt{2x^{3}e^{\sin x}+x^{2}}}dx$
Sep
12
comment Is any 2$m$-dimensional manifold almost complex?
locally — yes, globally — no
Sep
11
reviewed Reviewed Derivative of the Square Root of X
Sep
9
awarded  Reviewer
Sep
9
reviewed Reviewed Find all complex numbers which are equal to (one of) their own roots of order $7$
Aug
30
reviewed Looks OK When is the geometric Picard group $Pic(X_{\overline{K}})$ of finite type?
Aug
30
reviewed Leave Closed Existence of approximating simple function
Aug
28
reviewed Leave Closed How can I solve $\sum_{n=1}^{\infty} \frac{8}{(4n-1)(4n-3)}$ step by step?
Aug
28
reviewed Reviewed If limit of $ \lim_{x\to0}(\frac{sin2x}{x^3} + \frac{a}{x^2} + b) $ is zero, then find a+b?
Aug
27
reviewed Close Find the sum of the roots of the floor equation
Aug
27
reviewed Close Calculus $\int_0^{+\infty}\frac{\sin^2x}x\mathrm dx$
Aug
26
reviewed Close How to find stationary points of two-variable cubic
Aug
26
reviewed Close How to solve this using set theory?
Aug
26
reviewed Close Partial Differential Equation Formation (Arbitrary Functions)
Aug
26
awarded  Nice Question