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Jun
24
reviewed Approve Calculate left and right null vectors of a 3x3 matrix using SVD
Jun
21
reviewed Looks OK Resolve this system:
Jun
10
reviewed Looks OK Is this a sufficient condition for differentiability
Jun
10
reviewed Approve Are there infinitely many non equivalent metric spaces on certain sets (?)
Jun
10
reviewed No Action Needed Find mathmatical notation for a relation
Jun
10
reviewed Approve What breaks the Turing Completeness of simply typed lambda calculus?
May
4
reviewed Close How do we get $S(m) = S(m/2) + \lg m$ from $T(n) = T(\sqrt{n}) + \lg\lg n$?
May
4
reviewed Leave Open Local informatics Olympiad and Algorithm
May
4
reviewed Close All entire functions which satisfying : $f(2z)=f(z)^{2}$
May
4
reviewed Close Compute $\frac{1}{e}\sum\limits_{n=0}^{\infty}\frac{n^{k}}{n!}$ for $k=0, 1, 2 … $
May
4
reviewed Leave Open How to find this integral from Gaussian integral?
May
4
reviewed Close Find all functions $f: \mathbb{Z} \to \mathbb{Z} $ such that for all $x,y, \in \mathbb{Z}$, $f(x-y+f(y))=f(x)+f(y)$.
May
4
reviewed Close An isometry of Hilbert spaces using the Radon-Nikodym derivative
May
4
reviewed Close Linear Regression and finding Correlation Coefficient
Apr
24
reviewed Leave Open Covering relation over functions
Apr
24
reviewed Leave Open Complex Number to a power
Apr
24
reviewed Leave Open Surgery to unlink $S^1$ and $S^2$ in $S^4$
Apr
24
reviewed Close What radius circle to remove from unit circle to make golden earring?
Apr
24
reviewed Close Proving $\lim_{x\to 0}f(x)=\infty$.
Apr
24
reviewed Close Define $(a_n)_{n\in \mathbb{N}}$ by $a_n:=\prod_{k=2}^n (1-\frac{1}{k^{1+c}})$. Does $\lim_{n\to\infty} a_n=0$ hold?