ErlGrey
  • Member for 3 years, 1 month
  • Last seen more than a month ago
  • Hempshaw Lane, Стокпорт, Великобритания
1 answers
8 votes
96 views
3 bookmarks
Does $\sum\int\arctan(n^2x)\sin(1/x)\,dx$ converge?
1 answers
3 votes
112 views
Prove that this is a surjection and find the kernel
3 answers
2 votes
69 views
Limit of the sum using integral
1 answers
1 votes
42 views
Count a triple integral on a sphere
1 answers
1 votes
105 views
Probability of the absence of isolated vertices.
1 answers
1 votes
90 views
Isomorphism between quotient rings and modules
0 answers
1 votes
61 views
Find the heaviest ball if one weighing can be wrong.
0 answers
1 votes
20 views
Number of hamiltonian paths in directed graph and its addition to complete digraph
3 answers
1 votes
161 views
Find the limit $\lim_{n\rightarrow\infty}\frac{(100n)!}{(99n)!(100n)^n}$
3 answers
1 votes
61 views
1 bookmarks
How to find limit of sum $\lim\limits_{n\to\infty}\sum_{k=1}^{100n}\frac{k^p}{n^{p+1}}$
2 answers
1 votes
49 views
Prove inequality between functions
0 answers
0 votes
36 views
Count an integral with parameter $\int_0^1 \frac{\arctan(ax)}{x\sqrt{1-x^2}}$
1 answers
0 votes
115 views
Prove an infinite differentiability of integral and find it's limit
2 answers
0 votes
62 views
Is it true that $f_n(x)=\left(\frac{n}{n+x}\right)^n$ uniformly converges to $e^{-x}$
0 answers
0 votes
46 views
Modules, endomorphism and ideals
1 answers
0 votes
71 views
Find all $\alpha$ such that integral converges
0 answers
0 votes
45 views
Index of centralizer if $H\lhd G$ and $|H| < \infty$
1 answers
0 votes
29 views
Bound on the number of people having meetings with each other
0 answers
0 votes
46 views
Prove that these orderings are isomorphic
1 answers
0 votes
38 views
Prove that if $\phi$ is invertible operator of V space, then $\phi$ and $\phi^{-1}$ has the same invariant subspaces.