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Jan
22
reviewed Approve Prove that there is at most one function that verifies
Jan
21
revised Kolmogorov 0-1 law
added 70 characters in body; edited tags
Jan
21
answered Kolmogorov 0-1 law
Jan
21
reviewed Leave Closed Determine if $\frac{k-1}{k}+\frac{1}{k(k+1)}=\frac{k}{k+1}$ holds
Jan
21
reviewed Leave Open systems of 2 equations in 2 variables
Jan
21
comment Setting bound for an infinite expected value
You want to estimate the probability $\mathbb P(X\geqslant t)$ if the expectation of $X$ is infinite, isn't it? Do you have other information?
Jan
21
reviewed Leave Open A boundary value problem for the ODE $y''+y'/y=-1$
Jan
21
reviewed Approve Check $S\cap T$ where $S =\left\{ x \in \mathbb{R} : x^6 -x^5 \le 100\right\}$ and $T =\left\{x^2-2x : x \in (0,\infty)\right\}$
Jan
21
reviewed Approve If $d$ divides $k$ and $d$ divides $n$, then $d$ divides $(8k - 3n)$
Jan
21
reviewed No Action Needed What is the best method to calculate the square root when I know that the root is always an integer?
Jan
21
reviewed Reviewed Writing elements of field extension in terms of the basis determined by a root of a polynomial
Jan
21
reviewed No Action Needed Optimization of shapes
Jan
21
reviewed Leave Open Hardness of discrete log in additive group
Jan
21
reviewed No Action Needed How to find center of a circle from only an arbitary arc of that circle
Jan
21
reviewed Approve Limit involving branch point of a complex function
Jan
21
reviewed Reject Is the rank of a matrix the same of its transpose? If yes, how can I prove it?
Jan
21
reviewed Looks OK Hardness of discrete log in additive group
Jan
20
revised Checking that $C_{0}(X)$ is a vector space
edited body
Jan
20
revised Checking that $C_{0}(X)$ is a vector space
added 6 characters in body; edited tags
Jan
20
reviewed No Action Needed Finding subgroups of a group from specific order