Question

Beginner help at proving two sets are equal

score 91 · Answer 1 · 2026-03-29 10:26:40

91

Views

Beginner help at proving two sets are equal

Published on 29 Mar 2026 - 10:26

score 176 · Answer 2 · 2026-03-24 15:56:29

176

Views

Proof problem: If $x-1$ is divisible by $4$ then $x^2 - 1$ is divisible by 4

Published on 24 Mar 2026 - 15:56

score 282 · Answer 3 · 2026-03-24 23:46:16

282

Views

Prove by induction that $ 2^{n+2}|(2n+3)! $ is true for all positive integers n

Published on 24 Mar 2026 - 23:46

score 94 · Answer 4 · 2026-03-25 07:16:36

94

Views

Why does proving a set is a subset of another only require you to take a single element of the subset?

Published on 25 Mar 2026 - 7:16

score 74 · Answer 5 · 2026-03-25 12:17:25

74

Views

Proving that $a_{n} \rightarrow L$ given that $a_{n}+ 2a_{n+1} \rightarrow 3L$ .

Published on 25 Mar 2026 - 12:17

score 60 · Answer 6 · 2026-04-09 00:05:38

60

Views

Covariance of least squares parameter?

Published on 09 Apr 2026 - 0:05

score 1.2k · Answer 7 · 2026-03-25 19:06:52

1.2k

Views

Proof verification: lower semi continuous at x implies that the lim inf of every convergent sequence is bigger than f(x)

Published on 25 Mar 2026 - 19:06

score 239 · Answer 8 · 2026-03-25 19:05:05

239

Views

Use the definition to prove for all natural number m, 4m+ 7 odd.

Published on 25 Mar 2026 - 19:05

score 642 · Answer 9 · 2026-03-25 19:07:18

642

Views

If $Y$ is a compact subset of $X$, and $Z\subset Y$, then $Z$ is compact if and only if $Z$ is closed.

Published on 25 Mar 2026 - 19:07

score 245 · Answer 10 · 2026-03-25 19:07:08

245

Views

If $Y_1,...,Y_n$ are a finite collection of compact subsets of $X$, then their union $Y_1\cup....\cup Y_n$ are also compact.

Published on 25 Mar 2026 - 19:07

score 88 · Answer 11 · 2026-03-25 12:53:23

88

Views

Linear Independent (LI) Growth Lemma

Published on 25 Mar 2026 - 12:53

score 41 · Answer 12 · 2018-01-31 17:24:50

41

Views

$cl_f(A)=\bigcup_{n \in \mathbb{N}}A_n$

Published on 31 Jan 2018 - 17:24

score 130 · Answer 13 · 2026-03-25 03:01:39

130

Views

Proving that $\binom{2n}{n} > n2^n , \forall n \ge 4 $

Published on 25 Mar 2026 - 3:01

score 89 · Answer 14 · 2026-03-25 07:45:04

89

Views

Suppose $f(a)=p$, a prime, then $f$ has a t most three distinct zeros.

Published on 25 Mar 2026 - 7:45

score 171 · Answer 15 · 2026-03-27 14:24:29

171

Views

Proof of the Kuratowski Formalization

Published on 27 Mar 2026 - 14:24

List Question

Beginner help at proving two sets are equal

Proof problem: If $x-1$ is divisible by $4$ then $x^2 - 1$ is divisible by 4

Prove by induction that $ 2^{n+2}|(2n+3)! $ is true for all positive integers n

Why does proving a set is a subset of another only require you to take a single element of the subset?

Proving that $a_{n} \rightarrow L$ given that $a_{n}+ 2a_{n+1} \rightarrow 3L$ .

Covariance of least squares parameter?

Proof verification: lower semi continuous at x implies that the lim inf of every convergent sequence is bigger than f(x)

Use the definition to prove for all natural number m, 4m+ 7 odd.

If $Y$ is a compact subset of $X$, and $Z\subset Y$, then $Z$ is compact if and only if $Z$ is closed.

If $Y_1,...,Y_n$ are a finite collection of compact subsets of $X$, then their union $Y_1\cup....\cup Y_n$ are also compact.

Linear Independent (LI) Growth Lemma

$cl_f(A)=\bigcup_{n \in \mathbb{N}}A_n$

Proving that $\binom{2n}{n} > n2^n , \forall n \ge 4 $

Suppose $f(a)=p$, a prime, then $f$ has a t most three distinct zeros.

Proof of the Kuratowski Formalization

Trending Questions

Popular # Hahtags

Popular Questions