User Wojowu

18 votes

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Geometric series in algebraic number fields

answered Mar 27, 2022 at 16:07

17 votes

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Can there be a proper class of Dedekind-finite cardinals?

answered Sep 19 at 13:14

17 votes

Proofs where higher dimension or cardinality actually enabled much simpler proof?

answered May 21, 2020 at 8:44

17 votes

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What about of periodic points of $\sum_{n=1}^\infty\frac{\mu(n)}{n}x^n$, $0<x<1$, where $\mu(n)$ is the Möbius function?

answered Jan 14, 2018 at 12:35

16 votes

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Strange and non-strange prime numbers, are there infinitely many of them?

answered Jun 21, 2020 at 12:29

16 votes

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On homeomorphic subsets of $\mathbb{R}^3$ with non-homeomorphic complements

answered Jun 1, 2022 at 20:24

16 votes

Are there only finitely many $m$ such that $m$ is the number of elliptic curves with a given conductor?

answered Aug 24, 2021 at 20:56

16 votes

Theorems with many distinct proofs

answered Aug 11, 2021 at 21:00

16 votes

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Existence of surjection vs injection over $\sf ZF$

answered Jan 1, 2022 at 15:26

15 votes

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Squares in a triquadratic field

answered Aug 19, 2021 at 16:21

15 votes

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Can a category be enriched over abelian groups in more than one way?

answered Jan 14, 2023 at 12:22

15 votes

Does this conic have a rational point?

answered May 23, 2023 at 23:37

15 votes

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Around the diophantine equation $\frac{a}{2b+3c}+\frac{b}{2c+3a}+\frac{c}{2a+3b}=\text{odd integer}$, over positive integers

answered Feb 6, 2020 at 20:14

15 votes

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Model in $\mathsf{ZFC}$ such that ${\cal P}(\ldots)$ has "jumping property"

answered Nov 17, 2019 at 10:08

15 votes

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Absolute values of non-unit algebraic integers at all infinite places

answered May 13, 2021 at 16:48

14 votes

Modular forms with finitely many or very few non-zero Fourier coefficients

answered Apr 25, 2021 at 10:55

14 votes

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Linear suborders of $(P(\omega),\subseteq)$

answered Nov 8, 2019 at 15:48

14 votes

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Is the set of powerful numbers piecewise syndetic?

answered Dec 16, 2021 at 14:51

14 votes

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Motivation for Laver's use of large cardinals to show finite combinatorial properties of Laver tables

answered Dec 16, 2021 at 16:57

13 votes

Consequences of Goldbach's conjecture

answered Aug 18, 2021 at 12:37

13 votes

Robin's criterion, Goldbach's conjecture and upper bound for $r_{0}(n)$

answered Jul 25, 2021 at 12:13

13 votes

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Computational efficiency of character sums for counting finite field points on a curve

answered Oct 18, 2022 at 15:18

13 votes

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The grail of functional analysis?

answered Mar 21, 2022 at 14:24

13 votes

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Quadratic reciprocity for three primes?

answered Jan 15, 2020 at 20:24

13 votes

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Newman's proof of the prime number theorem

answered Mar 31, 2020 at 13:47

13 votes

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What are the references of the form [D blah] in Giraud's cohomologie nonabelienne?

answered Oct 21, 2020 at 23:30

13 votes

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Does every ultrafilter contain sets of sup-measure $0$?

answered Feb 10, 2016 at 9:13

12 votes

A search for theorems which appear to have very few, if any hypotheses

answered Feb 17, 2016 at 17:03

12 votes

Collection of equivalent forms of Riemann Hypothesis

answered Feb 29, 2016 at 14:53

12 votes

Tiling the plane with incongruent isosceles triangles

answered Oct 21, 2015 at 20:00

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227 Answers

Geometric series in algebraic number fields

Can there be a proper class of Dedekind-finite cardinals?

Proofs where higher dimension or cardinality actually enabled much simpler proof?

What about of periodic points of $\sum_{n=1}^\infty\frac{\mu(n)}{n}x^n$, $0<x<1$, where $\mu(n)$ is the Möbius function?

Strange and non-strange prime numbers, are there infinitely many of them?

On homeomorphic subsets of $\mathbb{R}^3$ with non-homeomorphic complements

Are there only finitely many $m$ such that $m$ is the number of elliptic curves with a given conductor?

Theorems with many distinct proofs

Existence of surjection vs injection over $\sf ZF$

Squares in a triquadratic field

Can a category be enriched over abelian groups in more than one way?

Does this conic have a rational point?

Around the diophantine equation $\frac{a}{2b+3c}+\frac{b}{2c+3a}+\frac{c}{2a+3b}=\text{odd integer}$, over positive integers

Model in $\mathsf{ZFC}$ such that ${\cal P}(\ldots)$ has "jumping property"

Absolute values of non-unit algebraic integers at all infinite places

Modular forms with finitely many or very few non-zero Fourier coefficients

Linear suborders of $(P(\omega),\subseteq)$

Is the set of powerful numbers piecewise syndetic?

Motivation for Laver's use of large cardinals to show finite combinatorial properties of Laver tables

Consequences of Goldbach's conjecture

Robin's criterion, Goldbach's conjecture and upper bound for $r_{0}(n)$

Computational efficiency of character sums for counting finite field points on a curve

The grail of functional analysis?

Quadratic reciprocity for three primes?

Newman's proof of the prime number theorem

What are the references of the form [D blah] in Giraud's cohomologie nonabelienne?

Does every ultrafilter contain sets of sup-measure $0$?

A search for theorems which appear to have very few, if any hypotheses

Collection of equivalent forms of Riemann Hypothesis

Tiling the plane with incongruent isosceles triangles