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A non-geometrical approach to this surds question

score 68 · Answer 1 · 2026-03-20 07:53:10

68

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A non-geometrical approach to this surds question

Published on 20 Mar 2026 - 7:53

score 181 · Answer 2 · 2018-01-17 13:56:50

181

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If a continuous function is bigger than another at a point, then it is so in an entire neighbourhood...proof?

Published on 17 Jan 2018 - 13:56

score 325 · Answer 3 · 2026-03-20 08:45:32

325

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How to maximize function $\sum_{i=1}^{\omega}\max(0, \log(x_i))$ under the constraint that $\sum_{i=1}^{\omega}x_i = S$

Published on 20 Mar 2026 - 8:45

score 216 · Answer 4 · 2026-03-22 02:32:36

216

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Prove that $a+b+c\le \frac {a^3}{bc} + \frac {b^3}{ac} + \frac {c^3}{ab}$

Published on 22 Mar 2026 - 2:32

score 79 · Answer 5 · 2026-03-22 20:25:19

79

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A inequality in stability of mean curvature flow

Published on 22 Mar 2026 - 20:25

score 808 · Answer 6 · 2026-03-22 07:02:01

808

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Expected value inequality using Jensen

Published on 22 Mar 2026 - 7:02

score 86 · Answer 7 · 2026-03-23 21:04:48

86

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Concave function - Generic proof

Published on 23 Mar 2026 - 21:04

score 87 · Answer 8 · 2026-03-24 12:26:21

87

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Taylor series of $\frac{\cosh(t)-1}{\sinh(t)}$

Published on 24 Mar 2026 - 12:26

score 107 · Answer 9 · 2026-03-17 13:06:45

107

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Proving that inequalities $\|a\|_{\infty} \leq \|a\|_2 \leq \sqrt{n} \|a\|_{\infty}$ are true and sharp.

Published on 17 Mar 2026 - 13:06

score 321 · Answer 10 · 2026-03-17 22:14:28

321

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Show that $|\text{Re}(2+3z^2 +iz)| \leq 6$, when $|z|\leq 1$

Published on 17 Mar 2026 - 22:14

score 215 · Answer 11 · 2026-03-22 13:04:31

215

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$3$ convergent sequences with the same limit

Published on 22 Mar 2026 - 13:04

score 143 · Answer 12 · 2018-01-18 20:08:36

143

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Proving that an alternating sum of arctangents is bounded

Published on 18 Jan 2018 - 20:08

score 335 · Answer 13 · 2026-03-20 03:26:56

335

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Why can you take the supremum of f out of the integral?

Published on 20 Mar 2026 - 3:26

score 537 · Answer 14 · 2018-01-18 22:46:22

537

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Existence of $V \subset \mathbb{R}^n : V, V^\perp \cap \mathbb{R}_{\geq0}^n = 0$

Published on 18 Jan 2018 - 22:46

score 79 · Answer 15 · 2026-03-20 07:25:34

79

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Majorization form for a given set of integers in some interval.

Published on 20 Mar 2026 - 7:25

List Question

A non-geometrical approach to this surds question

If a continuous function is bigger than another at a point, then it is so in an entire neighbourhood...proof?

How to maximize function $\sum_{i=1}^{\omega}\max(0, \log(x_i))$ under the constraint that $\sum_{i=1}^{\omega}x_i = S$

Prove that $a+b+c\le \frac {a^3}{bc} + \frac {b^3}{ac} + \frac {c^3}{ab}$

A inequality in stability of mean curvature flow

Expected value inequality using Jensen

Concave function - Generic proof

Taylor series of $\frac{\cosh(t)-1}{\sinh(t)}$

Proving that inequalities $\|a\|_{\infty} \leq \|a\|_2 \leq \sqrt{n} \|a\|_{\infty}$ are true and sharp.

Show that $|\text{Re}(2+3z^2 +iz)| \leq 6$, when $|z|\leq 1$

$3$ convergent sequences with the same limit

Proving that an alternating sum of arctangents is bounded

Why can you take the supremum of f out of the integral?

Existence of $V \subset \mathbb{R}^n : V, V^\perp \cap \mathbb{R}_{\geq0}^n = 0$

Majorization form for a given set of integers in some interval.

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