Question

Approximate a metric on a finite set by one having rational distance

score 93 · Answer 1 · 2026-02-24 05:09:31

93

Views

Approximate a metric on a finite set by one having rational distance

Published on 24 Feb 2026 - 5:09

score 157 · Answer 2 · 2026-04-11 07:31:25

157

Views

Showing that a unit closed ball is closed in a normed vector space using the definition

Published on 11 Apr 2026 - 7:31

score 90 · Answer 3 · 2026-04-11 14:32:31

90

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Why does the triangle inequality not work here?

Published on 11 Apr 2026 - 14:32

score 55 · Answer 4 · 2026-02-24 05:10:51

55

Views

The sum of segments inside the triangle vs. the sum of sides

Published on 24 Feb 2026 - 5:10

score 168 · Answer 5 · 2026-02-24 05:11:06

168

Views

$A+B+C+D=\pi$, and $0\leq A,B,C,D \leq \frac{\pi}{2}$. Prove that $\sin^4(A)+\sin^4(B)+\sin^4(C)+\sin^4(D)\leq 2$

Published on 24 Feb 2026 - 5:11

score 66 · Answer 6 · 2026-04-11 23:41:31

66

Views

How do the two definitions of the triangle inequality relate?

Published on 11 Apr 2026 - 23:41

score 176 · Answer 7 · 2026-02-24 05:12:30

176

Views

Is there an elegant method to find the minimum value of $\frac{\sqrt{x^{4}+x^{2}+2 x+1}+\sqrt{x^{4}-2 x^{3}+5 x^{2}-4 x+1}}{x}$ for positive $x$?

Published on 24 Feb 2026 - 5:12

score 134 · Answer 8 · 2026-04-12 00:05:00

134

Views

Prove that a convex polygon cannot have three sides, each of which is greater than the longest diagonal.

Published on 12 Apr 2026 - 0:05

score 171 · Answer 9 · 2026-04-11 16:56:59

171

Views

Does Nei's Standard Genetic "Distance" obey identity of indiscernibles?

Published on 11 Apr 2026 - 16:56

score 80 · Answer 10 · 2026-04-09 07:57:18

80

Views

Proof Triangle Inequality does not hold by counterexample

Published on 09 Apr 2026 - 7:57

score 76 · Answer 11 · 2026-04-11 16:02:19

76

Views

Using reverse triangle inequality to prove inequality

Published on 11 Apr 2026 - 16:02

score 66 · Answer 12 · 2026-04-11 21:35:34

66

Views

Triangle inequality for Bergman distance

Published on 11 Apr 2026 - 21:35

score 166 · Answer 13 · 2026-02-24 05:07:39

166

Views

Solutions of Triangles inequalities - Duplicate

Published on 24 Feb 2026 - 5:07

score 40 · Answer 14 · 2026-02-24 05:12:30

40

Views

$Y_n \xrightarrow{p}Y$, can we use triangle inequality $|Y_n - Y_{n+1}| \le |Y_n - Y| + |Y_{n+1} - Y|$ to prove that $Y_{n+1} - Y_n$ goes to $0$ in p

Published on 24 Feb 2026 - 5:12

score 62 · Answer 15 · 2026-04-09 15:06:21

62

Views

Mathematical expectation problem

Published on 09 Apr 2026 - 15:06

List Question

Approximate a metric on a finite set by one having rational distance

Showing that a unit closed ball is closed in a normed vector space using the definition

Why does the triangle inequality not work here?

The sum of segments inside the triangle vs. the sum of sides

$A+B+C+D=\pi$, and $0\leq A,B,C,D \leq \frac{\pi}{2}$. Prove that $\sin^4(A)+\sin^4(B)+\sin^4(C)+\sin^4(D)\leq 2$

How do the two definitions of the triangle inequality relate?

Is there an elegant method to find the minimum value of $\frac{\sqrt{x^{4}+x^{2}+2 x+1}+\sqrt{x^{4}-2 x^{3}+5 x^{2}-4 x+1}}{x}$ for positive $x$?

Prove that a convex polygon cannot have three sides, each of which is greater than the longest diagonal.

Does Nei's Standard Genetic "Distance" obey identity of indiscernibles?

Proof Triangle Inequality does not hold by counterexample

Using reverse triangle inequality to prove inequality

Triangle inequality for Bergman distance

Solutions of Triangles inequalities - Duplicate

$Y_n \xrightarrow{p}Y$, can we use triangle inequality $|Y_n - Y_{n+1}| \le |Y_n - Y| + |Y_{n+1} - Y|$ to prove that $Y_{n+1} - Y_n$ goes to $0$ in p

Mathematical expectation problem

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