Question

Countable dimensional normed space incomplete

score 619 · Answer 1 · 2026-04-15 00:55:24

619

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Countable dimensional normed space incomplete

Published on 15 Apr 2026 - 0:55

score 281 · Answer 2 · 2026-04-17 10:01:08

281

Views

Show that $W_1 \cap W_2 \leq $ the smaller of $n_1$ and $n_2$

Published on 17 Apr 2026 - 10:01

score 76 · Answer 3 · 2026-04-15 17:59:24

76

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find a set of integers where {$a_i + a_j | 1 \le i \le j \le n$} leave distinct remainders when divided by $n(n+1)/2$

Published on 15 Apr 2026 - 17:59

score 42 · Answer 4 · 2026-04-16 00:00:08

42

Views

Help with if $m \equiv 2 \operatorname{mod} 4$, then $\nexists x,y \in N : x^2 - y^2 = m$ proof.

Published on 16 Apr 2026 - 0:00

score 53 · Answer 5 · 2026-04-09 11:18:37

53

Views

Property of solutions of differential equation

Published on 09 Apr 2026 - 11:18

score 74 · Answer 6 · 2026-04-10 23:44:25

74

Views

Well-order on infinite set with property

Published on 10 Apr 2026 - 23:44

score 98 · Answer 7 · 2026-04-16 02:13:59

98

Views

Ellipse: Most direct algebraic demonstration that $\left|x\right|$ is maximal when $y=0$

Published on 16 Apr 2026 - 2:13

score 4.5k · Answer 8 · 2026-04-14 17:59:40

4.5k

Views

If $a+b+c$ divides the product $abc$, then is $(a,b,c)$ a Pythagorean Triple?

Published on 14 Apr 2026 - 17:59

score 117 · Answer 9 · 2026-04-14 22:23:27

117

Views

Show $\sup\{b^{-1/n}\} = 1$

Published on 14 Apr 2026 - 22:23

score 111 · Answer 10 · 2026-03-25 12:50:11

111

Views

given some positive integers, prove that there's an infinite AP that contains exactly 3 or 4 of the given integers

Published on 25 Mar 2026 - 12:50

score 211 · Answer 11 · 2026-04-14 03:55:23

211

Views

prove that $PM$ is perpendicular to $AB$ on a cyclic quadrilateral

Published on 14 Apr 2026 - 3:55

score 1.4k · Answer 12 · 2026-04-17 01:20:54

1.4k

Views

Prove that $\dim(W_1+W_2) = \dim(W_1)+\dim(W_2)-\dim(W_1 \cap W_2)$ proof confirm

Published on 17 Apr 2026 - 1:20

score 74 · Answer 13 · 2026-04-12 14:56:38

74

Views

How to close the last branch of this analytic tableau?

Published on 12 Apr 2026 - 14:56

score 119 · Answer 14 · 2026-04-15 04:09:09

119

Views

Show by mathematical induction that $(2n)! > 2^n*n!$ for all $n \geq 2$

Published on 15 Apr 2026 - 4:09

score 44 · Answer 15 · 2026-04-16 14:34:43

44

Views

Find the number of such triples $(a,b,c)$ with $50 \ge |a| \ge |b| \ge |c| \ge 1$

Published on 16 Apr 2026 - 14:34

List Question

Countable dimensional normed space incomplete

Show that $W_1 \cap W_2 \leq $ the smaller of $n_1$ and $n_2$

find a set of integers where {$a_i + a_j | 1 \le i \le j \le n$} leave distinct remainders when divided by $n(n+1)/2$

Help with if $m \equiv 2 \operatorname{mod} 4$, then $\nexists x,y \in N : x^2 - y^2 = m$ proof.

Property of solutions of differential equation

Well-order on infinite set with property

Ellipse: Most direct algebraic demonstration that $\left|x\right|$ is maximal when $y=0$

If $a+b+c$ divides the product $abc$, then is $(a,b,c)$ a Pythagorean Triple?

Show $\sup\{b^{-1/n}\} = 1$

given some positive integers, prove that there's an infinite AP that contains exactly 3 or 4 of the given integers

prove that $PM$ is perpendicular to $AB$ on a cyclic quadrilateral

Prove that $\dim(W_1+W_2) = \dim(W_1)+\dim(W_2)-\dim(W_1 \cap W_2)$ proof confirm

How to close the last branch of this analytic tableau?

Show by mathematical induction that $(2n)! > 2^n*n!$ for all $n \geq 2$

Find the number of such triples $(a,b,c)$ with $50 \ge |a| \ge |b| \ge |c| \ge 1$

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