Skip to main content
Mathematics
Derek Luna's user avatar
Derek Luna's user avatar
Derek Luna's user avatar
Derek Luna
  • Member for 6 years, 3 months
  • Last seen this week
Profile Activity
Stats
2,731
reputation
32k
reached
161
answers
26
questions
Communities
View all
About

Student of Life

Badges
View all badges
This user doesn’t have any gold badges yet.
9
silver badges
19
bronze badges
Top tags
View all tags
34
Score
43
Posts
23
Posts %
15
Score
27
Posts
14
Posts %
12
Score
19
Posts
10
Posts %
10
Score
14
Posts
7
Posts %
10
Score
12
Posts
6
Posts %
9
Score
14
Posts
7
Posts %
Top posts
View all questions and answers
answer
5
Inequality proof by induction
Nov 20, 2020
answer
5
If $A$ and $B$ are sets, do $\mathcal{P}(A - B)$ and $\mathcal{P}(A) - \mathcal{P}(B)$ equal?
Jan 9, 2021
answer
4
Find all the integer solutions of $x^2-4y^2=1$
Jan 5, 2021
answer
4
How to prove that, if two numbers are equal $\mod2$ and$\mod3$ ,they are equal$\mod 6 $?
Nov 9, 2020
answer
4
If the square of an irrational number r is irrational, can it be equal to a + br, where both a and b are rational
Nov 10, 2020
question
3
Prove that if $x$ is element of the group G then $H = \lbrace x^n : n \in Z\rbrace$ is a subgroup of $G$.
May 12, 2019
answer
3
construct a sequence Sn that does not converge but its arithmetic mean converges to 0
Nov 4, 2020
question
3
Is this a bijection from $[0,1)$ to $(0,1)$?
Aug 2, 2019
answer
3
How to verify if vectors of $\mathbb{R}^{2 \times 2}$ span $\mathbb{R}^{2 \times 2}$
Feb 9, 2021
answer
3
What is the connection between number of permutations and number of subsets?
Sep 7, 2019
Top network posts
View all network posts
6
Why won't the top three strings change pitch
5
Does the equation $a^b+b^c+c^a=d^e$ have solutions in $\mathbb {N}$