Question

For every natural number $a \ge 2$, every natural number $m$ can be written in base $a$

score 46 · Answer 1 · 2026-04-11 00:32:45

46

Views

For every natural number $a \ge 2$, every natural number $m$ can be written in base $a$

Published on 11 Apr 2026 - 0:32

score 49 · Answer 2 · 2026-04-10 05:27:45

49

Views

Proof verification: Restriction of f to two closed subsets of X covering X continuous implies f on X is continuous

Published on 10 Apr 2026 - 5:27

score 54 · Answer 3 · 2026-04-16 10:45:34

54

Views

Prove $\exists \xi \in (-2,2):f(\xi)+f''(\xi)=0.$

Published on 16 Apr 2026 - 10:45

score 58 · Answer 4 · 2026-04-09 23:32:11

58

Views

Proof tasks math student need help

Published on 09 Apr 2026 - 23:32

score 52 · Answer 5 · 2026-04-16 08:50:29

52

Views

Proving that $\lim_{n\to\infty}s_n=0$

Published on 16 Apr 2026 - 8:50

score 83 · Answer 6 · 2026-03-25 06:41:01

83

Views

proving inequality through convexity and continuity

Published on 25 Mar 2026 - 6:41

score 109 · Answer 7 · 2026-04-17 06:17:21

109

Views

Does $\left\lfloor\frac{x^2+x}{i}\right\rfloor - \left\lfloor\frac{x^2}{i}\right\rfloor = \left\lfloor\frac{x}{i}\right\rfloor$?

Published on 17 Apr 2026 - 6:17

score 63 · Answer 8 · 2026-04-17 13:57:59

63

Views

Finding all roots of equations which solutions are different than $z=0$

Published on 17 Apr 2026 - 13:57

score 33 · Answer 9 · 2026-04-13 19:54:15

33

Views

Doubt about proof the smallest subfield that contains a ring

Published on 13 Apr 2026 - 19:54

score 78 · Answer 10 · 2026-04-12 23:12:02

78

Views

Derivative definition with double limit

Published on 12 Apr 2026 - 23:12

score 183 · Answer 11 · 2026-04-10 16:08:27

183

Views

If $f$ is uniformly continuous on $[1,4]$ and uniformly continuous on $[2,5]$ is $f$ uniformly continuous on $[1,5]$?

Published on 10 Apr 2026 - 16:08

score 65 · Answer 12 · 2026-04-16 16:11:49

65

Views

Prove continuity by definition and epsilon-delta property. $g(x)=\sqrt{2x+1} , x_0=-0.5$

Published on 16 Apr 2026 - 16:11

score 868 · Answer 13 · 2026-03-25 06:03:57

868

Views

Show that $ad-bc \ne 0$ for a composition of two Mobius transformations.

Published on 25 Mar 2026 - 6:03

score 30 · Answer 14 · 2026-04-13 23:49:36

30

Views

$X=(-\infty,+\infty]$, $T_>:=\{(-a,+\infty]:a \in [-\infty, +\infty]\}$. Is $X$ compact?

Published on 13 Apr 2026 - 23:49

score 235 · Answer 15 · 2026-04-14 14:06:17

235

Views

Show that $R$ is an order relation in $\mathbb{R^2}$

Published on 14 Apr 2026 - 14:06

List Question

For every natural number $a \ge 2$, every natural number $m$ can be written in base $a$

Proof verification: Restriction of f to two closed subsets of X covering X continuous implies f on X is continuous

Prove $\exists \xi \in (-2,2):f(\xi)+f''(\xi)=0.$

Proof tasks math student need help

Proving that $\lim_{n\to\infty}s_n=0$

proving inequality through convexity and continuity

Does $\left\lfloor\frac{x^2+x}{i}\right\rfloor - \left\lfloor\frac{x^2}{i}\right\rfloor = \left\lfloor\frac{x}{i}\right\rfloor$?

Finding all roots of equations which solutions are different than $z=0$

Doubt about proof the smallest subfield that contains a ring

Derivative definition with double limit

If $f$ is uniformly continuous on $[1,4]$ and uniformly continuous on $[2,5]$ is $f$ uniformly continuous on $[1,5]$?

Prove continuity by definition and epsilon-delta property. $g(x)=\sqrt{2x+1} , x_0=-0.5$

Show that $ad-bc \ne 0$ for a composition of two Mobius transformations.

$X=(-\infty,+\infty]$, $T_>:=\{(-a,+\infty]:a \in [-\infty, +\infty]\}$. Is $X$ compact?

Show that $R$ is an order relation in $\mathbb{R^2}$

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