List questions from discrete-geometry

54

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Construct a discrete subset such that every point of $\partial D$ is a limit point of discrete subset

Published on 25 Mar 2026 - 6:12

25

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Properties of set of points

Published on 23 Apr 2020 - 16:55

82

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Problem about Tverberg number: Let $d,r_1,r_2$ natural numbers then we have $T(d,r_1r_2)$ $<=T(d,r_1)T(d,r_2)$

Published on 25 Mar 2026 - 23:42

167

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On an $n\times n$ grid, with white and black tiles: is there always a connected path across the grid?

Published on 02 May 2020 - 5:41

307

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Connected path of diagonals across an $n\times n$ grid, and Lemma of Sperner

Published on 26 Mar 2026 - 1:11

45

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Proof of double counting formula

Published on 02 May 2020 - 12:31

1.1k

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Number of ways to stack LEGO bricks

Published on 25 Mar 2026 - 12:24

326

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Points in a triangular lattice at the same distance from the origin and "breaking of symmetry"

Published on 10 May 2020 - 23:57

47

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Criteria for checking if points are the vertices of a hypercube

Published on 13 May 2020 - 2:29

233

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Probability of crossing $n\times n$ grid with random diagonals; and bond percolation critical threshold $p_c$

Published on 25 Mar 2026 - 1:20

61

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Inclusion of polytopes

Published on 23 Feb 2026 - 8:31

391

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On a question of contractible graphs

Published on 23 May 2020 - 13:33

264

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Example of non-contractible acyclic finite simplical complex

Published on 26 Mar 2026 - 7:33

181

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Project vector onto a discrete subspace

Published on 28 May 2020 - 10:04

132

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The closure of a rational polyhedron is a rational polyhedron.

Published on 28 May 2020 - 10:24

List Question

Construct a discrete subset such that every point of $\partial D$ is a limit point of discrete subset

Properties of set of points

Problem about Tverberg number: Let $d,r_1,r_2$ natural numbers then we have $T(d,r_1r_2)$ $<=T(d,r_1)T(d,r_2)$

On an $n\times n$ grid, with white and black tiles: is there always a connected path across the grid?

Connected path of diagonals across an $n\times n$ grid, and Lemma of Sperner

Proof of double counting formula

Number of ways to stack LEGO bricks

Points in a triangular lattice at the same distance from the origin and "breaking of symmetry"

Criteria for checking if points are the vertices of a hypercube

Probability of crossing $n\times n$ grid with random diagonals; and bond percolation critical threshold $p_c$

Inclusion of polytopes

On a question of contractible graphs

Example of non-contractible acyclic finite simplical complex

Project vector onto a discrete subspace

The closure of a rational polyhedron is a rational polyhedron.

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