Davide Giraudo
Reputation
99,537
98/100 score
 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