List questions from extremal-combinatorics

49

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Given $K$ points in the $N$-simplex, when is there a unique $M$-polytope that contains the $K$ points?

Published on 27 Mar 2026 - 11:48

65

Views

Maxima and minima in combinatorial geometry

Published on 06 Apr 2021 - 4:37

54

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The maximum value of the size of a subset that satisfies a specific condition

Published on 09 Apr 2021 - 16:27

72

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How many subsets of size $n$ of $S$ are required such that each element is in one subset with each other element of $S$

Published on 13 Apr 2021 - 18:53

41

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Smallest table containing all subsets of $[2n]$

Published on 16 Apr 2021 - 11:11

33

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Smallest symmetric table containing all subsets of $[2n]$

Published on 17 Apr 2021 - 7:48

84

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ε-regular pair (A, B) includes $K_{3,3}$ subgraph

Published on 28 Mar 2026 - 3:33

64

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Given a set $S$ of real numbers, find the smallest set $A$ such that every element of $S$ can be expressed as a sum of distinct elements of $A$.

Published on 21 Apr 2021 - 15:02

69

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Erdos-Ko-Rado with unions

Published on 07 May 2021 - 15:42

102

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Planar analogues of complete graphs

Published on 09 May 2021 - 8:29

73

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Uncountable Intersection of uncountably many uncountable subsets of $\mathbb{R}$

Published on 27 Mar 2026 - 2:01

140

Views

Maximum number of triples from $[n]$ so that no two elements appear together more than once

Published on 12 May 2021 - 20:57

325

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Searching radioactive balls

Published on 13 May 2021 - 12:57

76

Views

Largest matrix satisfying a rank constraint

Published on 27 Mar 2026 - 10:44

83

Views

Cardinality of a simple set of integer tuples

Published on 14 May 2021 - 17:27

List Question

Given $K$ points in the $N$-simplex, when is there a unique $M$-polytope that contains the $K$ points?

Maxima and minima in combinatorial geometry

The maximum value of the size of a subset that satisfies a specific condition

How many subsets of size $n$ of $S$ are required such that each element is in one subset with each other element of $S$

Smallest table containing all subsets of $[2n]$

Smallest symmetric table containing all subsets of $[2n]$

ε-regular pair (A, B) includes $K_{3,3}$ subgraph

Given a set $S$ of real numbers, find the smallest set $A$ such that every element of $S$ can be expressed as a sum of distinct elements of $A$.

Erdos-Ko-Rado with unions

Planar analogues of complete graphs

Uncountable Intersection of uncountably many uncountable subsets of $\mathbb{R}$

Maximum number of triples from $[n]$ so that no two elements appear together more than once

Searching radioactive balls

Largest matrix satisfying a rank constraint

Cardinality of a simple set of integer tuples

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