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m0meni
  • Member for 9 years, 8 months
  • Last seen more than a month ago
12 votes
3 answers
3k views

Negation of $0 = 1$

5 votes
2 answers
3k views

Explanation for the the number of trailing zeros in a factorial.

4 votes
4 answers
6k views

Find infimum of $\{\frac{1}{n^2} | n \in \Bbb N\}$ in $\mathbb{R}$

3 votes
2 answers
938 views

Show that infimum of set is in closure of set.

3 votes
3 answers
139 views

Show that $\{x \in \mathbb R : x^2 + e^x = 1\}$ is compact

3 votes
2 answers
83 views

Prove $\forall x,c \in \mathbb R, |f(x) - f(c)| \le K|x - c|^2$ implies $f(x)$ is constant.

2 votes
2 answers
81 views

Solving a first order non-linear homogenous ODE

1 vote
0 answers
150 views

Do you have to use Latin Squares to solve the Social Golfer's problem?

1 vote
1 answer
198 views

How I'm conceptualizing compactness. Does this make sense?

1 vote
3 answers
3k views

Prove $\{m + \sqrt{2n} : m,n \in \mathbb{N}\}$ is countable

1 vote
3 answers
582 views

Infimum of recursive sequence $x_1 = 8$ and $x_{n+1} = \frac12 x_n + 2$

0 votes
1 answer
145 views

Find sequence in set S that converges to supremum of S.

0 votes
2 answers
64 views

How to pick $N$ for Cauchy sequence?

0 votes
2 answers
627 views

Interior and closure of open interval $\left(0, \infty \right)$ in $\mathbb R$

0 votes
1 answer
30 views

Find all values of $r \ge 0$ such that $x_n = \frac{r^n}{r^n + 1}$ is Cauchy.

0 votes
1 answer
996 views

Maximize equation with summation.

0 votes
1 answer
98 views

Solving a second order ODE substituting $y'=v$

0 votes
1 answer
296 views

Can't solve second order ODE with variation of parameters or undetermined coefficients

0 votes
1 answer
63 views

What's the significance of a bijection in this combinatorics problem: picking numbers that differ by more than 2