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, 1 month
  • Last seen this week
Profile Activity
Stats
2,712
reputation
31k
reached
159
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
33
Score
42
Posts
23
Posts %
15
Score
27
Posts
15
Posts %
12
Score
18
Posts
10
Posts %
10
Score
13
Posts
7
Posts %
10
Score
12
Posts
6
Posts %
9
Score
14
Posts
8
Posts %
Top posts
View all questions and answers
5
If $A$ and $B$ are sets, do $\mathcal{P}(A - B)$ and $\mathcal{P}(A) - \mathcal{P}(B)$ equal?
Jan 9, 2021
5
Inequality proof by induction
Nov 20, 2020
4
How to prove that, if two numbers are equal $\mod2$ and$\mod3$ ,they are equal$\mod 6 $?
Nov 9, 2020
4
Find all the integer solutions of $x^2-4y^2=1$
Jan 5, 2021
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
3
construct a sequence Sn that does not converge but its arithmetic mean converges to 0
Nov 4, 2020
3
(2n + 1) + (2n) is odd?
Dec 2, 2020
3
Is this a bijection from $[0,1)$ to $(0,1)$?
Aug 2, 2019
3
Why is my solution wrong to $\,99x \equiv 18 \mod 30$
Nov 16, 2020
3
How to verify if vectors of $\mathbb{R}^{2 \times 2}$ span $\mathbb{R}^{2 \times 2}$
Feb 9, 2021
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 $\mathbb {N}$