List questions from ramsey-theory

Published on 26 Mar 2017 - 7:30

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K5 Graph Avoidance Coloring Game

Published on 30 Mar 2017 - 15:34

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Necessary and sufficient conditions for regular graphs

Published on 26 Mar 2026 - 10:58

700

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Lower bound on Van der Waerden number W(r,k)

Published on 31 Mar 2017 - 23:07

361

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Question about upper bound chromatic number of triangle-free graphs on $n$ vertices

Published on 04 Apr 2017 - 2:17

53

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Ramsey number, enumerating graphs.

Published on 04 Apr 2017 - 7:10

200

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Prove that the sum of k irrational numbers is not always rational for 1 $\le$ k < n

Published on 06 Apr 2017 - 0:13

462

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Prove $R(2K_3, 2K_3)=10$

Published on 06 Apr 2017 - 18:09

71

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Minimum number of edges in graph with Ramsey property

Published on 26 Mar 2026 - 12:40

102

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Variant of Erdos-Szekeres theorem

Published on 26 Mar 2026 - 4:30

148

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Edges of each colour for Ramsey Graphs

Published on 04 Mar 2023 - 11:16

60

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Reference request: infinitary Ramsey theory

Published on 26 Mar 2026 - 2:52

277

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Given increasing sequence of numbers, what is guaranteed min length the longest subseq. s.t. differences of terms are either decreasing or increasing?

Published on 29 Mar 2023 - 15:23

199

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What are the proof-theoretic strengths of Ramsey's theorems?

Published on 25 Mar 2026 - 6:06

73

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Why does $\mathsf{WKL}_{0}$ not prove Ramsey's Theorem for singletons?

Published on 25 Mar 2026 - 10:52

List Question

Proof of Hales–Jewett number

K5 Graph Avoidance Coloring Game

Necessary and sufficient conditions for regular graphs

Lower bound on Van der Waerden number W(r,k)

Question about upper bound chromatic number of triangle-free graphs on $n$ vertices

Ramsey number, enumerating graphs.

Prove that the sum of k irrational numbers is not always rational for 1 $\le$ k < n

Prove $R(2K_3, 2K_3)=10$

Minimum number of edges in graph with Ramsey property

Variant of Erdos-Szekeres theorem

Edges of each colour for Ramsey Graphs

Reference request: infinitary Ramsey theory

Given increasing sequence of numbers, what is guaranteed min length the longest subseq. s.t. differences of terms are either decreasing or increasing?

What are the proof-theoretic strengths of Ramsey's theorems?

Why does $\mathsf{WKL}_{0}$ not prove Ramsey's Theorem for singletons?

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