User Thomas Lesgourgues

7 votes

1 answer

365 views

Graph built from orthogonal Latin squares

asked Apr 7, 2020 at 5:15

6 votes

2 answers

543 views

Elliptic curve with same number of points over two different fields

asked Oct 8, 2018 at 13:04

6 votes

3 answers

618 views

Statement true because not provable

asked Apr 10, 2019 at 15:26

5 votes

1 answer

160 views

Random walk on infinite group - Entropy Speed and Growth

asked Oct 5, 2019 at 12:05

4 votes

2 answers

312 views

Infinite sum - generalising Catalan generating function

asked Oct 31, 2019 at 14:41

4 votes

2 answers

2k views

4 color theorem equivalent to cubic planar bridgeless are 3 edge colorable

asked Jan 8, 2019 at 12:18

3 votes

1 answer

122 views

Isoperimetric constant on random graph

asked Jan 5, 2019 at 18:25

3 votes

1 answer

82 views

Van der Waerden number - on a specific type of sequence

asked Mar 22, 2019 at 11:29

2 votes

0 answers

332 views

Error check in book - Jensen inequality and binomial coefficient

asked Mar 8, 2019 at 14:19

2 votes

1 answer

107 views

Fodor theorem on ultrafilter

asked Mar 18, 2019 at 17:46

2 votes

1 answer

360 views

Perfect matching in random bipartite graph - with fixed probability

asked Dec 11, 2018 at 10:03

2 votes

2 answers

211 views

Infinite sum with binomial coeffcient - Hypergeometric function ${}_2F_1$ and gauss theorem

asked Oct 30, 2019 at 13:00

2 votes

1 answer

198 views

1-Factorizations of complete graphs sharing a unique 1-factor

asked Apr 23, 2020 at 5:32

2 votes

1 answer

324 views

Projective plane - Blocking set relative to line from an oval

asked Apr 29, 2020 at 6:25

2 votes

1 answer

100 views

Arithmetic - linear order of $\mathbb{Z}$-copies

asked May 22, 2019 at 12:35

2 votes

1 answer

165 views

lamplighter group - Growth from Fibonacci tree

asked Sep 30, 2019 at 11:05

1 vote

1 answer

260 views

lamplighter group - presentation and relations

asked Sep 30, 2019 at 13:39

1 vote

1 answer

145 views

$T$ Aronszajn tree on $\omega_1$ - partition of $T$ into countably-many antichains.

asked May 31, 2019 at 16:31

1 vote

0 answers

73 views

Recursive bijection on $\mathbb{N}^3$ using one on $\mathbb{N}^2$

asked Jun 12, 2019 at 7:35

1 vote

1 answer

141 views

CH implies the existence of an $\omega_2$-Aronszajn tree

asked May 29, 2019 at 8:12

1 vote

1 answer

181 views

If a poset is $\sigma$-centered, so what can we say about $P\times P$

asked May 29, 2019 at 10:55

1 vote

2 answers

206 views

Is the eventown problem solution unique up to isomorphism

asked Nov 18, 2020 at 0:51

1 vote

0 answers

46 views

Thomae function - line patterns

asked Mar 4, 2021 at 2:10

1 vote

1 answer

114 views

Reference request : Hoffman type bound for non-regular graph based on min and max degree

asked Jan 26, 2022 at 0:30

1 vote

0 answers

208 views

Kesten-Spitzer-Whitman Theorem - Recurrent random walk on $\mathbb{Z}$

asked Oct 16, 2019 at 11:02

1 vote

0 answers

650 views

Moment Generating Function - Cauchy Random Variable

asked Jan 24, 2019 at 15:15

1 vote

1 answer

90 views

$\kappa$-ultrafilter on $\kappa$, creating a partition from $\bigcup_{\alpha < \lambda} X_\alpha \in $ filter

asked Mar 6, 2019 at 12:21

1 vote

2 answers

125 views

Tail set on $\mathcal{F}$ non-principal a $\kappa$-complete ultrafilter on $\kappa$

asked Mar 6, 2019 at 12:39

1 vote

1 answer

206 views

Example of infinite partition of a set $A$, with no elements in ultrafilter on $A$

asked Mar 6, 2019 at 17:13

1 vote

1 answer

151 views

order type of club - cofinality

asked Mar 18, 2019 at 18:10

Stack Exchange Network

37 Questions

Graph built from orthogonal Latin squares

Elliptic curve with same number of points over two different fields

Statement true because not provable

Random walk on infinite group - Entropy Speed and Growth

Infinite sum - generalising Catalan generating function

4 color theorem equivalent to cubic planar bridgeless are 3 edge colorable

Isoperimetric constant on random graph

Van der Waerden number - on a specific type of sequence

Error check in book - Jensen inequality and binomial coefficient

Fodor theorem on ultrafilter

Perfect matching in random bipartite graph - with fixed probability

Infinite sum with binomial coeffcient - Hypergeometric function ${}_2F_1$ and gauss theorem

1-Factorizations of complete graphs sharing a unique 1-factor

Projective plane - Blocking set relative to line from an oval

Arithmetic - linear order of $\mathbb{Z}$-copies

lamplighter group - Growth from Fibonacci tree

lamplighter group - presentation and relations

$T$ Aronszajn tree on $\omega_1$ - partition of $T$ into countably-many antichains.

Recursive bijection on $\mathbb{N}^3$ using one on $\mathbb{N}^2$

CH implies the existence of an $\omega_2$-Aronszajn tree

If a poset is $\sigma$-centered, so what can we say about $P\times P$

Is the eventown problem solution unique up to isomorphism

Thomae function - line patterns

Reference request : Hoffman type bound for non-regular graph based on min and max degree

Kesten-Spitzer-Whitman Theorem - Recurrent random walk on $\mathbb{Z}$

Moment Generating Function - Cauchy Random Variable

$\kappa$-ultrafilter on $\kappa$, creating a partition from $\bigcup_{\alpha < \lambda} X_\alpha \in $ filter

Tail set on $\mathcal{F}$ non-principal a $\kappa$-complete ultrafilter on $\kappa$

Example of infinite partition of a set $A$, with no elements in ultrafilter on $A$

order type of club - cofinality