Question

Prove that the powerset of a finite set is finite. (correct proof or abuse of definitions?)

score 375 · Answer 1 · 2026-04-16 00:42:41

375

Views

Prove that the powerset of a finite set is finite. (correct proof or abuse of definitions?)

Published on 16 Apr 2026 - 0:42

score 641 · Answer 2 · 2026-04-09 04:38:26

641

Views

Doubt about solution to Axler's Linear Algebra Done Right problem

Published on 09 Apr 2026 - 4:38

score 145 · Answer 3 · 2026-04-14 01:16:12

145

Views

An increasing sequence converges if and only if has supremum and moreover its limit is the supremum

Published on 14 Apr 2026 - 1:16

score 126 · Answer 4 · 2026-04-09 03:56:12

126

Views

Open Covering Of A Compact Set

Published on 09 Apr 2026 - 3:56

score 47 · Answer 5 · 2026-04-15 16:21:31

47

Views

Any interval in $\Bbb{R}_\mathcal{U}$ is connected in the subspace topology.

Published on 15 Apr 2026 - 16:21

score 70 · Answer 6 · 2026-04-12 13:08:20

70

Views

A conjecture about the solvability of rational equations of transcendental functions by elementary numbers

Published on 12 Apr 2026 - 13:08

score 244 · Answer 7 · 2026-04-12 21:31:32

244

Views

Finding the roots of the unknown function

Published on 12 Apr 2026 - 21:31

score 18 · Answer 8 · 2026-04-17 07:32:50

18

Views

Calculate all solutions of $\min_{z\in [0,1]^2} \max\{ x_1x_2^2(z_1-x_1), x_1^2x_2(z_2-x_2)\}$

Published on 17 Apr 2026 - 7:32

score 712 · Answer 9 · 2026-04-23 16:54:49

712

Views

Proof verification: $f$ is convex iff $f'$ is monotonically increasing

Published on 23 Apr 2026 - 16:54

score 769 · Answer 10 · 2026-04-13 19:57:50

769

Views

Equivalence relation almost everywhere.

Published on 13 Apr 2026 - 19:57

score 189 · Answer 11 · 2026-04-14 23:24:01

189

Views

Completeness of a metric space $(X,d)$ w.r.t the sup metric

Published on 14 Apr 2026 - 23:24

score 112 · Answer 12 · 2026-04-15 12:35:41

112

Views

Prove that the following proposition is true.

Published on 15 Apr 2026 - 12:35

score 200 · Answer 13 · 2026-03-25 19:02:23

200

Views

Evaluate $\int_{0}^{K} \text{sn}^4(u;k)\;\text{du}$

Published on 25 Mar 2026 - 19:02

score 74 · Answer 14 · 2026-04-12 04:16:35

74

Views

How many ways can we give seven same candy to three children?

Published on 12 Apr 2026 - 4:16

score 102 · Answer 15 · 2026-04-16 16:20:15

102

Views

Proving that the real valued $f'$ is monotonically increasing in (a, b) iff $f''(x) \ge 0 \forall x \in (a, b)$

Published on 16 Apr 2026 - 16:20

List Question

Prove that the powerset of a finite set is finite. (correct proof or abuse of definitions?)

Doubt about solution to Axler's Linear Algebra Done Right problem

An increasing sequence converges if and only if has supremum and moreover its limit is the supremum

Open Covering Of A Compact Set

Any interval in $\Bbb{R}_\mathcal{U}$ is connected in the subspace topology.

A conjecture about the solvability of rational equations of transcendental functions by elementary numbers

Finding the roots of the unknown function

Calculate all solutions of $\min_{z\in [0,1]^2} \max\{ x_1x_2^2(z_1-x_1), x_1^2x_2(z_2-x_2)\}$

Proof verification: $f$ is convex iff $f'$ is monotonically increasing

Equivalence relation almost everywhere.

Completeness of a metric space $(X,d)$ w.r.t the sup metric

Prove that the following proposition is true.

Evaluate $\int_{0}^{K} \text{sn}^4(u;k)\;\text{du}$

How many ways can we give seven same candy to three children?

Proving that the real valued $f'$ is monotonically increasing in (a, b) iff $f''(x) \ge 0 \forall x \in (a, b)$

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