Question

Axiom of dependent choice in König's lemma

score 77 · Answer 1 · 2026-03-25 03:02:47

77

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Axiom of dependent choice in König's lemma

Published on 25 Mar 2026 - 3:02

score 137 · Answer 2 · 2026-03-25 07:49:05

137

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Timothy Gowers's Proof That the Rational Numbers Form a Countable Set

Published on 25 Mar 2026 - 7:49

score 113 · Answer 3 · 2026-03-25 08:54:00

113

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Help with proof that $[\mathcal{O}_K/\mathfrak{B}_i^{e_i}:\mathbb{Z}/p\mathbb{Z}] = e_i[\mathcal{O}_K/\mathfrak{B}_i:\mathbb{Z}/p\mathbb{Z}]$

Published on 25 Mar 2026 - 8:54

score 482 · Answer 4 · 2018-04-09 15:24:03

482

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Why must two subgroups with trivial intersection commute with one another?

Published on 09 Apr 2018 - 15:24

score 168 · Answer 5 · 2018-04-09 17:05:29

168

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Finding a flaw in a proof that $(A\cup C)\times (B \cup D)\subseteq(A\times B)\cup(C\times D)$

Published on 09 Apr 2018 - 17:05

score 216 · Answer 6 · 2026-03-25 02:03:05

216

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Every conserving metric is Lipschitz equivalent to the euclidean product metric

Published on 25 Mar 2026 - 2:03

score 198 · Answer 7 · 2026-03-26 01:29:21

198

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Help understand second step in proof of ${n\choose m-1}+{n\choose m}={n+1\choose m}$

Published on 26 Mar 2026 - 1:29

score 89 · Answer 8 · 2026-03-26 16:06:16

89

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Inequality proof by induction of $n!>2^n+3^n$

Published on 26 Mar 2026 - 16:06

score 275 · Answer 9 · 2026-03-27 23:35:26

275

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How do we find ideals the ring $\mathbb R[X_0, X_1, ..., X_n,...]$? How do we show that each of these ideals are not finitely generated?

Published on 27 Mar 2026 - 23:35

score 54 · Answer 10 · 2026-03-25 15:56:58

54

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Proofs by counter example

Published on 25 Mar 2026 - 15:56

score 113 · Answer 11 · 2018-04-11 19:43:21

113

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Help interpreting a question about irreducible polynomials

Published on 11 Apr 2018 - 19:43

score 48 · Answer 12 · 2018-04-12 03:51:50

48

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Floor Functions Proof

Published on 12 Apr 2018 - 3:51

score 505 · Answer 13 · 2018-04-12 15:32:00

505

Views

Convergence in Measure in a Finite Measure Space

Published on 12 Apr 2018 - 15:32

score 182 · Answer 14 · 2026-03-25 18:31:24

182

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Proving that if $\lim\limits_{n\to\infty}a_n=+\infty$ and $\{b_n\}$ is a bounded sequence, then $\lim\limits_{n\to\infty}(a_n+b_n)=+\infty$

Published on 25 Mar 2026 - 18:31

score 398 · Answer 15 · 2026-03-25 04:38:53

398

Views

How do you prove by induction when summation and product notation are involved?

Published on 25 Mar 2026 - 4:38

List Question

Axiom of dependent choice in König's lemma

Timothy Gowers's Proof That the Rational Numbers Form a Countable Set

Help with proof that $[\mathcal{O}_K/\mathfrak{B}_i^{e_i}:\mathbb{Z}/p\mathbb{Z}] = e_i[\mathcal{O}_K/\mathfrak{B}_i:\mathbb{Z}/p\mathbb{Z}]$

Why must two subgroups with trivial intersection commute with one another?

Finding a flaw in a proof that $(A\cup C)\times (B \cup D)\subseteq(A\times B)\cup(C\times D)$

Every conserving metric is Lipschitz equivalent to the euclidean product metric

Help understand second step in proof of ${n\choose m-1}+{n\choose m}={n+1\choose m}$

Inequality proof by induction of $n!>2^n+3^n$

How do we find ideals the ring $\mathbb R[X_0, X_1, ..., X_n,...]$? How do we show that each of these ideals are not finitely generated?

Proofs by counter example

Help interpreting a question about irreducible polynomials

Floor Functions Proof

Convergence in Measure in a Finite Measure Space

Proving that if $\lim\limits_{n\to\infty}a_n=+\infty$ and $\{b_n\}$ is a bounded sequence, then $\lim\limits_{n\to\infty}(a_n+b_n)=+\infty$

How do you prove by induction when summation and product notation are involved?

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