Gabriela Da Silva
  • Member for 1 year, 2 months
  • Last seen more than 1 year ago
3 answers
6 votes
167 views
How to read and execute $\sum_{1 \leq \ell <m<n} \frac{1}{5^{\ell}3^{m}2^{n}}$
1 answers
5 votes
154 views
2 bookmarks
What is the greatest number of points in the plane such that the distance between any two of them is an odd integer?
2 answers
4 votes
64 views
Permutations and number of lists
3 answers
3 votes
99 views
Find the number of ordered triples
2 answers
2 votes
117 views
Multiplication of matrix: ABAB
1 answers
2 votes
59 views
Order of a subgroup H in a multiplicative group.
2 answers
2 votes
140 views
1 bookmarks
Evaluate $\lim\limits_{n\to +\infty}\frac{1}{n^2}\sum_{k=1}^{n} \cot^2\left(\frac{\pi k}{2n+1}\right)$
1 answers
2 votes
35 views
1 bookmarks
Properties of this family of function
1 answers
2 votes
90 views
Doubt about derivatives.
1 answers
2 votes
40 views
How many functions are possible?
1 answers
1 votes
39 views
Prove this field equality.
1 answers
1 votes
92 views
4 bookmarks
Prove this following integral inequality
1 answers
1 votes
29 views
Doubt about conditions of divisibility
3 answers
1 votes
38 views
How do I solve that matrix operation?
2 answers
1 votes
49 views
1 bookmarks
Why is this not a equivalence relation in the $\mathbb{Z}$ set?
2 answers
1 votes
49 views
2 bookmarks
Figures sum of a number
1 answers
1 votes
31 views
Find the maximum between the minima
1 answers
1 votes
46 views
What conditions do this polynomial satisfy?
0 answers
1 votes
49 views
Evaluating $\lim\limits_{n\to\infty}\{(2+ \sqrt{3})^n\}$, where $\{x\}$ is the fractional part of $x$
1 answers
1 votes
16 views
Structure constant in Weyl basis
1 answers
1 votes
26 views
Lie algebra and rotation
3 answers
1 votes
112 views
Does the set $\{1, i , −1\}$ form a group?
0 answers
1 votes
46 views
Find a function satisfying this condition
1 answers
0 votes
49 views
Antisymmetric tensor
1 answers
0 votes
57 views
Series convergence and euler number
1 answers
0 votes
18 views
Write in matrix form
0 answers
0 votes
46 views
1 bookmarks
Find all the number in this series
1 answers
0 votes
39 views
Given a triangle. Find the possible isosceles triangle.
0 answers
0 votes
45 views
How much prime satisfy this condition?
2 answers
0 votes
32 views
How to calculate the divergence by the definition