User Tony Huynh

8 votes

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Does this matroid have a name?

answered Jun 20, 2014 at 20:49

8 votes

Math puzzles for dinner

answered Jun 24, 2010 at 15:33

8 votes

Does the hypergraph structure of the set of subgroups of a finite group characterize isomorphism type?

answered Aug 13, 2010 at 12:09

8 votes

Topological spaces that resemble the space of irrationals

answered Jul 30, 2010 at 23:09

8 votes

What are some mathematical concepts that were (pretty much) created from scratch and do not owe a debt to previous work?

answered Apr 16, 2010 at 15:18

8 votes

Interesting results in algebraic geometry accessible to 3rd year undergraduates

answered Apr 1, 2010 at 23:43

8 votes

nonstandard analysis book recommendation

answered Mar 20, 2010 at 15:13

8 votes

Different ways of proving that two sets are equal

answered Feb 26, 2010 at 19:08

8 votes

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Why are graph embeddings defined the way they are?

answered Dec 16, 2010 at 11:02

7 votes

Uncountable family of infinite subsets with pairwise finite intersections

answered Feb 23, 2012 at 19:06

7 votes

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A graph $G$ with two $K_6$ subgraphs, in which any one-factor of $G$ induces a one-factor in exactly one of the $K_6$ subgraphs?

answered Mar 25, 2012 at 9:57

7 votes

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Algorithm for the shortest path through all the points of a 2D cloud

answered May 23, 2010 at 22:50

7 votes

How to find an integer set, s.t. the sums of at most 3 elements are all distinct?

answered Jul 19, 2014 at 22:06

7 votes

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Size of distinct sums in A

answered Jun 1, 2014 at 17:33

7 votes

Are there five consecutive primes in arithmetic progression?

answered May 1, 2013 at 12:49

7 votes

I know that you know...

answered Nov 23, 2012 at 15:09

7 votes

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Separating Heavier from the Lighter Balls

answered May 6, 2016 at 21:23

7 votes

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NP-hardness of finding maximum of minimum element in diagonal of a matrix

answered Jan 16, 2015 at 2:08

7 votes

When is 2 qualitatively different from 3?

answered Nov 10 at 4:05

7 votes

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Denominators of rational polytopes in terms of hyperplane coefficients

answered Sep 24, 2023 at 1:29

7 votes

Non-enumerative proof that, in average, less than 50% of tiles in domino tiling of 2-by-n rectangle are vertical?

answered Sep 9, 2021 at 7:24

7 votes

Is it possible that every edge in a 1-planar drawing with minimum number of crossings is crossed?

answered Apr 19, 2022 at 10:06

7 votes

Metric TSP with integer edge cost

answered Jul 10, 2021 at 7:36

7 votes

VC dimension of vector spaces

answered Oct 13, 2020 at 14:43

7 votes

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Minimum number of independent pairs in a matroid

answered Oct 21, 2020 at 14:26

7 votes

(Non)uniqueness of the common-factor graph

answered May 14, 2018 at 12:46

7 votes

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Questions about "The best card trick"

answered Apr 15, 2019 at 23:10

7 votes

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Number of members of a separating union-closed family whose universe has given cardinality

answered May 18, 2016 at 20:19

7 votes

Hadwiger number and minimal degree

answered May 27, 2016 at 19:46

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Partition of a graph into subgraphs with small maximum degree

answered Aug 17, 2016 at 18:43

Stack Exchange Network

475 Answers

Does this matroid have a name?

Math puzzles for dinner

Does the hypergraph structure of the set of subgroups of a finite group characterize isomorphism type?

Topological spaces that resemble the space of irrationals

What are some mathematical concepts that were (pretty much) created from scratch and do not owe a debt to previous work?

Interesting results in algebraic geometry accessible to 3rd year undergraduates

nonstandard analysis book recommendation

Different ways of proving that two sets are equal

Why are graph embeddings defined the way they are?

Uncountable family of infinite subsets with pairwise finite intersections

A graph $G$ with two $K_6$ subgraphs, in which any one-factor of $G$ induces a one-factor in exactly one of the $K_6$ subgraphs?

Algorithm for the shortest path through all the points of a 2D cloud

How to find an integer set, s.t. the sums of at most 3 elements are all distinct?

Size of distinct sums in A

Are there five consecutive primes in arithmetic progression?

I know that you know...

Separating Heavier from the Lighter Balls

NP-hardness of finding maximum of minimum element in diagonal of a matrix

When is 2 qualitatively different from 3?

Denominators of rational polytopes in terms of hyperplane coefficients

Non-enumerative proof that, in average, less than 50% of tiles in domino tiling of 2-by-n rectangle are vertical?

Is it possible that every edge in a 1-planar drawing with minimum number of crossings is crossed?

Metric TSP with integer edge cost

VC dimension of vector spaces

Minimum number of independent pairs in a matroid

(Non)uniqueness of the common-factor graph

Questions about "The best card trick"

Number of members of a separating union-closed family whose universe has given cardinality

Hadwiger number and minimal degree

Partition of a graph into subgraphs with small maximum degree