Question

Does the infinite product of the reciprocals of a decreasing (or increasing) function equal zero?

score 137 · Answer 1 · 2018-12-08 02:15:58

137

Views

Does the infinite product of the reciprocals of a decreasing (or increasing) function equal zero?

Published on 08 Dec 2018 - 2:15

score 737 · Answer 2 · 2018-12-21 17:08:08

737

Views

Every 'decreasing' or 'increasing' infinite sequence whose sum converges contains at least one term of magnitude 0

Published on 21 Dec 2018 - 17:08

score 69 · Answer 3 · 2026-03-25 10:56:10

69

Views

On an interesting assertion in the OeisWiki page on multiply-perfect numbers

Published on 25 Mar 2026 - 10:56

score 170 · Answer 4 · 2018-12-25 14:04:08

170

Views

Is this variant of Goormaghtigh's conjecture known?

Published on 25 Dec 2018 - 14:04

score 82 · Answer 5 · 2018-12-29 14:46:09

82

Views

Probability for composite $n$ to have prime factor $\geq \sqrt n$

Published on 29 Dec 2018 - 14:46

score 343 · Answer 6 · 2026-03-25 09:40:02

343

Views

I have found a way of computing Euler's number. Is there any possible intuition of how that might be the case?

Published on 25 Mar 2026 - 9:40

score 76 · Answer 7 · 2018-12-31 08:33:04

76

Views

What is the sufficient and necessary conditions that $-1 \in G$, where $G$ is a multiplicative group of a ring.

Published on 31 Dec 2018 - 8:33

score 104 · Answer 8 · 2019-01-03 17:33:54

104

Views

Conjecture about polynomials $f_n\in\mathbb Q[X_1,\dots,X_n]$ defining bijections $\mathbb N^n\to\mathbb N$

Published on 03 Jan 2019 - 17:33

score 197 · Answer 9 · 2019-01-10 21:36:14

197

Views

Conjecture about fixed prime divisors of polynomials with integer coefficients

Published on 10 Jan 2019 - 21:36

score 90 · Answer 10 · 2019-01-11 15:44:00

90

Views

Proof of $ x^2 + y = y^2 + x$ when $ x+ y =1$ and $x$ is larger than $y$

Published on 11 Jan 2019 - 15:44

score 1.5k · Answer 11 · 2026-03-25 10:57:12

1.5k

Views

Can Erdős-Turán $\frac{5}{8}$ theorem be generalised that way?

Published on 25 Mar 2026 - 10:57

score 113 · Answer 12 · 2019-01-13 18:12:59

113

Views

Multiplicative order of $a\bmod c^{k+1}$

Published on 13 Jan 2019 - 18:12

score 340 · Answer 13 · 2019-01-19 10:04:20

340

Views

Hopf Conjecture about Curvature and Topology

Published on 19 Jan 2019 - 10:04

score 332 · Answer 14 · 2026-03-21 18:06:10

332

Views

A conjecture about irreducible polynomials with integer coefficients

Published on 21 Mar 2026 - 18:06

score 144 · Answer 15 · 2026-03-25 06:10:11

144

Views

Is there a counter-example to these number theoretic conjectures?

Published on 25 Mar 2026 - 6:10

List Question

Does the infinite product of the reciprocals of a decreasing (or increasing) function equal zero?

Every 'decreasing' or 'increasing' infinite sequence whose sum converges contains at least one term of magnitude 0

On an interesting assertion in the OeisWiki page on multiply-perfect numbers

Is this variant of Goormaghtigh's conjecture known?

Probability for composite $n$ to have prime factor $\geq \sqrt n$

I have found a way of computing Euler's number. Is there any possible intuition of how that might be the case?

What is the sufficient and necessary conditions that $-1 \in G$, where $G$ is a multiplicative group of a ring.

Conjecture about polynomials $f_n\in\mathbb Q[X_1,\dots,X_n]$ defining bijections $\mathbb N^n\to\mathbb N$

Conjecture about fixed prime divisors of polynomials with integer coefficients

Proof of $ x^2 + y = y^2 + x$ when $ x+ y =1$ and $x$ is larger than $y$

Can Erdős-Turán $\frac{5}{8}$ theorem be generalised that way?

Multiplicative order of $a\bmod c^{k+1}$

Hopf Conjecture about Curvature and Topology

A conjecture about irreducible polynomials with integer coefficients

Is there a counter-example to these number theoretic conjectures?

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