User Tony Huynh

4 votes

Accepted

Dimension of circuit space of a matroid

answered Aug 3, 2021 at 7:54

4 votes

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"Geodesic coherent" partition of a graph

answered Sep 22, 2022 at 16:40

4 votes

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For every partition of $E(K_{n,n})$ into $n$ colour classes of size $n$, there is a vertex incident to at least $\sqrt{n}$ colours

answered Feb 3, 2023 at 18:05

4 votes

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Solving systems of linear equations without introducing negative numbers

answered Feb 6, 2023 at 9:04

4 votes

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Is there an uncountable extension of the Ramsey set $[\omega]^2$?

answered Nov 19 at 15:23

4 votes

Minimum number of swaps to make multisets elements sums close

answered Dec 17, 2023 at 12:30

4 votes

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Conjecture about families of subsets of $\{1,\ldots,2n+1\}$ of size $n+1$

answered Oct 10, 2023 at 18:15

4 votes

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Does every graph admit an embedding such that identically-colored edges do not cross?

answered Dec 4, 2023 at 10:29

4 votes

Graph classes where finding explicit coloring have certificate that it is minumum

answered Jan 21, 2015 at 21:42

4 votes

Complete k-partite graph covers all K_k of a graph

answered Mar 16, 2015 at 15:09

4 votes

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The existence of a specific partition of the edge set of $K_{2n}$

answered Sep 19, 2015 at 18:03

4 votes

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Construction of planar embedding

answered Sep 25, 2015 at 16:13

4 votes

Graph homomorphisms and line graph

answered Oct 2, 2015 at 9:33

4 votes

On Bailey–Borwein–Plouffe formula for irrational numbers

answered Oct 2, 2015 at 19:06

4 votes

What are conjectures that are true for primes but then turned out to be false for some composite number?

answered Dec 19, 2015 at 7:56

4 votes

Critical with respect to chromatic, but not Hadwiger number

answered Oct 14, 2015 at 13:31

4 votes

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Minimal Support Solutions of a Linear System (Dissertation)

answered Feb 9, 2016 at 17:08

4 votes

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Stable marriages for infinite bipartite graphs

answered Apr 4, 2016 at 16:02

4 votes

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Degrees and common neighbors

answered Mar 29, 2016 at 11:46

4 votes

Accepted

On Sampling rank $r$ matrices

answered Dec 12, 2015 at 23:45

4 votes

Counting problems where unlabeled is easier than labeled

answered Mar 9, 2016 at 2:11

4 votes

How many perfect matchings in a regular bipartite graph?

answered May 20, 2013 at 23:04

4 votes

Probabilistic method used to prove existence theorems

answered Jun 3, 2014 at 17:28

4 votes

Topological Irreducible graphs for the projective plane

answered Dec 10, 2013 at 8:26

4 votes

Math puzzles for dinner

answered Jun 26, 2010 at 16:41

4 votes

Is this strange problem NP-complete?

answered May 15, 2010 at 21:33

4 votes

Accepted

A minimally 2-connected graph H and a 3-connected graph H' both contain G, does H' contain H?

answered May 16, 2010 at 1:26

4 votes

Applications of measure, integration and Banach spaces to combinatorics

answered Aug 28, 2010 at 11:04

4 votes

Accepted

Graph algorithm to find all subgraphs that connect N arbitrary vertices

answered Apr 28, 2010 at 18:46

4 votes

Is it possible to define a graph that has two vertices that are infinitely far apart?

answered Apr 29, 2010 at 20:07

Stack Exchange Network

475 Answers

Dimension of circuit space of a matroid

"Geodesic coherent" partition of a graph

For every partition of $E(K_{n,n})$ into $n$ colour classes of size $n$, there is a vertex incident to at least $\sqrt{n}$ colours

Solving systems of linear equations without introducing negative numbers

Is there an uncountable extension of the Ramsey set $[\omega]^2$?

Minimum number of swaps to make multisets elements sums close

Conjecture about families of subsets of $\{1,\ldots,2n+1\}$ of size $n+1$

Does every graph admit an embedding such that identically-colored edges do not cross?

Graph classes where finding explicit coloring have certificate that it is minumum

Complete k-partite graph covers all K_k of a graph

The existence of a specific partition of the edge set of $K_{2n}$

Construction of planar embedding

Graph homomorphisms and line graph

On Bailey–Borwein–Plouffe formula for irrational numbers

What are conjectures that are true for primes but then turned out to be false for some composite number?

Critical with respect to chromatic, but not Hadwiger number

Minimal Support Solutions of a Linear System (Dissertation)

Stable marriages for infinite bipartite graphs

Degrees and common neighbors

On Sampling rank $r$ matrices

Counting problems where unlabeled is easier than labeled

How many perfect matchings in a regular bipartite graph?

Probabilistic method used to prove existence theorems

Topological Irreducible graphs for the projective plane

Math puzzles for dinner

Is this strange problem NP-complete?

A minimally 2-connected graph H and a 3-connected graph H' both contain G, does H' contain H?

Applications of measure, integration and Banach spaces to combinatorics

Graph algorithm to find all subgraphs that connect N arbitrary vertices

Is it possible to define a graph that has two vertices that are infinitely far apart?