Question

Riesz-Markov-Kakutani representation theorem: qualitative or abstract proofs.

score 330 · Answer 1 · 2026-03-25 17:24:49

330

Views

Riesz-Markov-Kakutani representation theorem: qualitative or abstract proofs.

Published on 25 Mar 2026 - 17:24

score 169 · Answer 2 · 2026-03-25 10:55:31

169

Views

Generalization of Kakutani's fixed point theorem.

Published on 25 Mar 2026 - 10:55

score 46 · Answer 3 · 2026-03-25 20:34:42

46

Views

Is every rotationally-invariant $k$-covector zero?

Published on 25 Mar 2026 - 20:34

score 318 · Answer 4 · 2026-03-25 17:42:25

318

Views

The difference between proving the existence of the inverse of the fundamental group between a book and a youtube lecture.

Published on 25 Mar 2026 - 17:42

score 176 · Answer 5 · 2019-07-11 12:10:42

176

Views

Proof verification: uniqueness of empty set

Published on 11 Jul 2019 - 12:10

score 433 · Answer 6 · 2026-03-25 19:11:45

433

Views

Prove that an isometry of a compact metric space is not topologically mixing.

Published on 25 Mar 2026 - 19:11

score 973 · Answer 7 · 2019-07-14 00:42:05

973

Views

disproving $x \log{x} \in \Theta(x^2)$

Published on 14 Jul 2019 - 0:42

score 74 · Answer 8 · 2019-07-14 01:32:17

74

Views

When is $\mathbb{N}\setminus A$ finite?

Published on 14 Jul 2019 - 1:32

score 50 · Answer 9 · 2026-03-25 12:33:48

50

Views

A quicker way to decide if this extension is Galois.

Published on 25 Mar 2026 - 12:33

score 232 · Answer 10 · 2026-03-27 03:41:14

232

Views

Can we cancel out $1$ after replacing $e^x$ in $e^x-1$ by its Taylor expansion when calculating a limit?

Published on 27 Mar 2026 - 3:41

score 95 · Answer 11 · 2019-07-18 13:46:34

95

Views

Is there any other methods to prove the falsity of "for any natural number $n$, there is at least one prime between $n$ and $n+6$"?

Published on 18 Jul 2019 - 13:46

score 63 · Answer 12 · 2026-03-24 23:29:23

63

Views

Alternative Proof to "Prove that it cannot be proven that "The United States had more fallow acreage than planted acreage"

Published on 24 Mar 2026 - 23:29

score 157 · Answer 13 · 2019-07-19 13:58:32

157

Views

Limits and properties of the set $B=\{\frac{{(-1)}^nn}{n+1}:n=1,2,3...\}$

Published on 19 Jul 2019 - 13:58

score 185 · Answer 14 · 2026-03-25 06:35:45

185

Views

Find the minimum of the function $y=\sqrt{-x^2+4x+21}+\sqrt{-x^2+3x+10}.$

Published on 25 Mar 2026 - 6:35

score 80 · Answer 15 · 2019-07-20 22:02:51

80

Views

Prove that $\lim_{h\to\infty}(\sum_{r=0}^{\infty}\frac{(a-b)}{r(a-b)+bh}) = \ln{a} - \ln{b}$

Published on 20 Jul 2019 - 22:02

List Question

Riesz-Markov-Kakutani representation theorem: qualitative or abstract proofs.

Generalization of Kakutani's fixed point theorem.

Is every rotationally-invariant $k$-covector zero?

The difference between proving the existence of the inverse of the fundamental group between a book and a youtube lecture.

Proof verification: uniqueness of empty set

Prove that an isometry of a compact metric space is not topologically mixing.

disproving $x \log{x} \in \Theta(x^2)$

When is $\mathbb{N}\setminus A$ finite?

A quicker way to decide if this extension is Galois.

Can we cancel out $1$ after replacing $e^x$ in $e^x-1$ by its Taylor expansion when calculating a limit?

Is there any other methods to prove the falsity of "for any natural number $n$, there is at least one prime between $n$ and $n+6$"?

Alternative Proof to "Prove that it cannot be proven that "The United States had more fallow acreage than planted acreage"

Limits and properties of the set $B=\{\frac{{(-1)}^nn}{n+1}:n=1,2,3...\}$

Find the minimum of the function $y=\sqrt{-x^2+4x+21}+\sqrt{-x^2+3x+10}.$

Prove that $\lim_{h\to\infty}(\sum_{r=0}^{\infty}\frac{(a-b)}{r(a-b)+bh}) = \ln{a} - \ln{b}$

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