Question

Does this partial midpoint-convexity imply full convexity?

score 153 · Answer 1 · 2020-07-01 05:46:23

153

Views

Does this partial midpoint-convexity imply full convexity?

Published on 01 Jul 2020 - 5:46

score 107 · Answer 2 · 2020-07-01 20:10:58

107

Views

Is it true that only one root results in a valid solution?

Published on 01 Jul 2020 - 20:10

score 30 · Answer 3 · 2026-03-29 05:43:35

30

Views

Find a counter-expamle to $\lim_n \limsup_m d(a_n, a_m) =0 \implies (a_n)_n \ \text{is cauchy}.$

Published on 29 Mar 2026 - 5:43

score 75 · Answer 4 · 2020-07-03 18:13:52

75

Views

Examples of singular non locally constant functions

Published on 03 Jul 2020 - 18:13

score 95 · Answer 5 · 2020-07-04 13:28:51

95

Views

Does $\langle f(x),x\rangle=\langle g(x),x\rangle$ imply that $f=g$?

Published on 04 Jul 2020 - 13:28

score 152 · Answer 6 · 2020-07-04 16:29:06

152

Views

Example / Counterexample of non constant analytic function

Published on 04 Jul 2020 - 16:29

score 646 · Answer 7 · 2026-03-28 15:11:25

646

Views

Understanding the substitution theorem of Riemann integration.

Published on 28 Mar 2026 - 15:11

score 524 · Answer 8 · 2020-07-05 19:59:15

524

Views

If continuous images of $X$ are closed in every $Y$, is $X$ a compact space?

Published on 05 Jul 2020 - 19:59

score 97 · Answer 9 · 2026-03-29 14:25:07

97

Views

Are there invertible functions such that $f=\frac{g}{h}$ and $f^{-1}=\frac{g^{-1}}{h^{-1}}$?

Published on 29 Mar 2026 - 14:25

score 306 · Answer 10 · 2020-07-06 07:55:09

306

Views

Does convexity at a point imply existence of one-sided derivatives?

Published on 06 Jul 2020 - 7:55

score 272 · Answer 11 · 2026-03-25 20:36:17

272

Views

Does convexity at a single point imply convexity w.r.t finite convex combinations?

Published on 25 Mar 2026 - 20:36

score 68 · Answer 12 · 2026-03-28 13:21:20

68

Views

Would a finite number of primes imply there would be a finite number of secure exchanges on the internet?

Published on 28 Mar 2026 - 13:21

score 189 · Answer 13 · 2020-07-08 09:14:55

189

Views

Are the solutions of $f(x+h)=f(x)f(h)$of the form $a^x$ even if we consider discontinuous functions

Published on 08 Jul 2020 - 9:14

score 166 · Answer 14 · 2020-07-09 21:18:02

166

Views

How big can $U\subset\mathbb{C}$ be if there exists a non-constant holomorphic $f\colon U\to\mathbb{C}$ with $2f(2z)=f(z)+f(z+1)?$

Published on 09 Jul 2020 - 21:18

score 127 · Answer 15 · 2026-03-26 02:52:57

127

Views

Does every non-compact Tychonoff space admit an unbounded continuous function?

Published on 26 Mar 2026 - 2:52

List Question

Does this partial midpoint-convexity imply full convexity?

Is it true that only one root results in a valid solution?

Find a counter-expamle to $\lim_n \limsup_m d(a_n, a_m) =0 \implies (a_n)_n \ \text{is cauchy}.$

Examples of singular non locally constant functions

Does $\langle f(x),x\rangle=\langle g(x),x\rangle$ imply that $f=g$?

Example / Counterexample of non constant analytic function

Understanding the substitution theorem of Riemann integration.

If continuous images of $X$ are closed in every $Y$, is $X$ a compact space?

Are there invertible functions such that $f=\frac{g}{h}$ and $f^{-1}=\frac{g^{-1}}{h^{-1}}$?

Does convexity at a point imply existence of one-sided derivatives?

Does convexity at a single point imply convexity w.r.t finite convex combinations?

Would a finite number of primes imply there would be a finite number of secure exchanges on the internet?

Are the solutions of $f(x+h)=f(x)f(h)$of the form $a^x$ even if we consider discontinuous functions

How big can $U\subset\mathbb{C}$ be if there exists a non-constant holomorphic $f\colon U\to\mathbb{C}$ with $2f(2z)=f(z)+f(z+1)?$

Does every non-compact Tychonoff space admit an unbounded continuous function?

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