User John Griesmer

21 votes

Accepted

Furstenberg's Conjecture on 2-3-invariant continuous probability measures on the circle

answered Oct 31, 2010 at 1:44

13 votes

Accepted

A set with positive upper density whose difference set does not contain an infinite arithmetic progression

answered Feb 20, 2022 at 19:59

12 votes

When is 2 qualitatively different from 3?

answered Nov 9 at 21:48

5 votes

Accepted

Do sets of big returns contain sets of returns?

answered Oct 23 at 15:34

5 votes

Theorems with many distinct proofs

answered Aug 13, 2021 at 21:55

5 votes

Uniquely ergodicity and polynomial ergodic average

answered Aug 16, 2015 at 1:05

4 votes

Accepted

A property of rapid sequences of natural numbers

answered Sep 4, 2021 at 15:48

4 votes

Accepted

Ergodic decomposition of the action of a subgroup

answered Jul 18, 2022 at 5:35

3 votes

Situations where “naturally occurring” mathematical objects behave very differently from “typical” ones

answered Jul 24, 2022 at 18:57

3 votes

Extension of Khintchine's recurrence in a simple case

answered Mar 30, 2022 at 1:11

2 votes

Accepted

Transformation extending all ergodic rotations

answered Feb 7, 2016 at 20:57

2 votes

Quantitative versions of ergodic theorem

answered Oct 31, 2010 at 22:20

2 votes

Do these irrationals exist?

answered Sep 4, 2022 at 17:21

2 votes

Steinhaus theorem and Hausdorff dimension

answered Sep 1, 2023 at 20:42

2 votes

Is there a density theorem for Banach measure?

answered Aug 7, 2019 at 22:48

1 vote

Boolean rings with many automorphisms

answered Oct 23 at 6:56

1 vote

Examples of simultaneous independent breakthroughs

answered Aug 1, 2019 at 22:32

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17 Answers

Furstenberg's Conjecture on 2-3-invariant continuous probability measures on the circle

A set with positive upper density whose difference set does not contain an infinite arithmetic progression

When is 2 qualitatively different from 3?

Do sets of big returns contain sets of returns?

Theorems with many distinct proofs

Uniquely ergodicity and polynomial ergodic average

A property of rapid sequences of natural numbers

Ergodic decomposition of the action of a subgroup

Situations where “naturally occurring” mathematical objects behave very differently from “typical” ones

Extension of Khintchine's recurrence in a simple case

Transformation extending all ergodic rotations

Quantitative versions of ergodic theorem

Do these irrationals exist?

Steinhaus theorem and Hausdorff dimension

Is there a density theorem for Banach measure?

Boolean rings with many automorphisms

Examples of simultaneous independent breakthroughs