Question

delta - epsilon proof of continuity at a point

score 64 · Answer 1 · 2018-10-21 18:18:04

64

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delta - epsilon proof of continuity at a point

Published on 21 Oct 2018 - 18:18

score 86 · Answer 2 · 2026-03-26 13:01:12

86

Views

Non uniform continuity of $f(x)=x^3$ on the interval $[10,\infty)$

Published on 26 Mar 2026 - 13:01

score 51 · Answer 3 · 2018-10-22 22:47:59

51

Views

Bounded Darboux Function without Absolute Maximum on Closed Interval

Published on 22 Oct 2018 - 22:47

score 1.2k · Answer 4 · 2026-03-25 04:34:56

1.2k

Views

Proving that the absolute value function is elementary.

Published on 25 Mar 2026 - 4:34

score 470 · Answer 5 · 2026-03-25 14:07:01

470

Views

Prove that if $f$ is a rational function then it can not have a jump discontinuity.

Published on 25 Mar 2026 - 14:07

score 357 · Answer 6 · 2026-03-25 07:41:55

357

Views

Question about a weak*-norm continuity of a linear operator

Published on 25 Mar 2026 - 7:41

score 58 · Answer 7 · 2018-10-23 16:59:43

58

Views

Why cannot a function be continuous at multiple limit points?

Published on 23 Oct 2018 - 16:59

score 537 · Answer 8 · 2026-04-04 04:04:31

537

Views

A proof that the pointwise limits of lower semicontinuous (lsc) functions is lsc

Published on 04 Apr 2026 - 4:04

score 100 · Answer 9 · 2018-10-24 02:26:45

100

Views

Continuous functions with closed sets proof

Published on 24 Oct 2018 - 2:26

score 71 · Answer 10 · 2018-10-24 08:14:00

71

Views

Showing that $f\colon (-1,1)\rightarrow \mathbb R$ is constant

Published on 24 Oct 2018 - 8:14

score 17 · Answer 11 · 2018-10-24 11:28:04

17

Views

Set of continuously differentiable function subset of another one

Published on 24 Oct 2018 - 11:28

score 37 · Answer 12 · 2026-04-01 07:50:55

37

Views

How to show the following equality for twice differentiable function?

Published on 01 Apr 2026 - 7:50

score 2.7k · Answer 13 · 2018-10-24 15:44:42

2.7k

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Is the solution of every differential equation CONTINUOUS in it's given domain?

Published on 24 Oct 2018 - 15:44

score 81 · Answer 14 · 2018-10-24 16:23:44

81

Views

Show that $\frac{f(x+h)-f(x)}{h} \leq \limsup_{h \to 0+}\frac{f(x+h)-f(x)}{h}?$.

Published on 24 Oct 2018 - 16:23

score 865 · Answer 15 · 2026-03-26 14:22:33

865

Views

Is every measure $0$ set a set of discontinuities of a Riemann integrable function?

Published on 26 Mar 2026 - 14:22

List Question

delta - epsilon proof of continuity at a point

Non uniform continuity of $f(x)=x^3$ on the interval $[10,\infty)$

Bounded Darboux Function without Absolute Maximum on Closed Interval

Proving that the absolute value function is elementary.

Prove that if $f$ is a rational function then it can not have a jump discontinuity.

Question about a weak*-norm continuity of a linear operator

Why cannot a function be continuous at multiple limit points?

A proof that the pointwise limits of lower semicontinuous (lsc) functions is lsc

Continuous functions with closed sets proof

Showing that $f\colon (-1,1)\rightarrow \mathbb R$ is constant

Set of continuously differentiable function subset of another one

How to show the following equality for twice differentiable function?

Is the solution of every differential equation CONTINUOUS in it's given domain?

Show that $\frac{f(x+h)-f(x)}{h} \leq \limsup_{h \to 0+}\frac{f(x+h)-f(x)}{h}?$.

Is every measure $0$ set a set of discontinuities of a Riemann integrable function?

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