List questions from extremal-combinatorics

Published on 23 Mar 2026 - 0:27

153

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Does there always exist a Chebyshev center of three constant weight points in $\mathbb F_2^n$ which is equidistant?

Published on 25 Mar 2026 - 9:28

91

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Minimum number of binary integer variables to handle $AND$ and $OR$ implications in Mixed Integer Linear Programming?

Published on 25 Mar 2026 - 4:35

135

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If $G$ is any n-vertex triangle free graph not containing a copy of $D_d$, then $e(G) \leq n(d-1)$

Published on 23 Mar 2026 - 14:04

163

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Minimal number of questions to identify a subset

Published on 23 Mar 2026 - 17:32

114

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Distribution of the knapsack problem

Published on 24 Mar 2026 - 10:12

23

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Distribution in the combinatorial optimization

Published on 24 Mar 2026 - 0:24

122

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Reference request: general Turan density upper bounds

Published on 24 Mar 2026 - 13:23

296

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Lower bound of number of independent sets

Published on 23 Mar 2026 - 15:05

66

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For any permutation $\sigma$ of $\{ 1, \dots ,n \}$ there exists $k$ such that $|k- \sigma (k)| \le \frac{n}{2}$

Published on 23 Mar 2026 - 21:10

351

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Cardinality of certain subsets in vector spaces over finite fields

Published on 23 Mar 2026 - 17:57

29

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Finding set with equal-size intersection given a set family

Published on 07 May 2019 - 19:07

301

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Maximum Regions Vees Can Divide a Circle

Published on 24 Mar 2026 - 11:35

25

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A question related to Extremal Principle

Published on 23 Mar 2026 - 9:34

41

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How many distinct non-zero vectors are needed to ensure that they span $\mathbb{F}_2^n$.

Published on 23 Mar 2026 - 16:07

List Question

Turan density results for 4- or 5- graphs

Does there always exist a Chebyshev center of three constant weight points in $\mathbb F_2^n$ which is equidistant?

Minimum number of binary integer variables to handle $AND$ and $OR$ implications in Mixed Integer Linear Programming?

If $G$ is any n-vertex triangle free graph not containing a copy of $D_d$, then $e(G) \leq n(d-1)$

Minimal number of questions to identify a subset

Distribution of the knapsack problem

Distribution in the combinatorial optimization

Reference request: general Turan density upper bounds

Lower bound of number of independent sets

For any permutation $\sigma$ of $\{ 1, \dots ,n \}$ there exists $k$ such that $|k- \sigma (k)| \le \frac{n}{2}$

Cardinality of certain subsets in vector spaces over finite fields

Finding set with equal-size intersection given a set family

Maximum Regions Vees Can Divide a Circle

A question related to Extremal Principle

How many distinct non-zero vectors are needed to ensure that they span $\mathbb{F}_2^n$.

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