List questions from discrete-geometry

Published on 13 Apr 2026 - 16:34

127

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What are the facets of the Tridiagonal Birkhoff $d$-polytope $\Omega^t_{d+1}$?

Published on 10 May 2026 - 17:53

89

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Number of lines needed to pass through every region of a map

Published on 13 Apr 2026 - 23:54

1.6k

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Prove Existence of a Circle

Published on 13 Apr 2026 - 14:44

91

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dimension of Weber set and selectope (as a operator)

Published on 11 Apr 2026 - 20:11

89

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Does a unipotent transformation preserve covolume?

Published on 10 Apr 2026 - 11:35

312

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Are there any four-dimensional shapes in the whole wide world?

Published on 10 Apr 2026 - 13:31

698

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Proof: Minkowski sum polytope implies A and B polytopes

Published on 11 May 2026 - 6:15

339

Views

The number of $(d-1)$-faces in a $d$-polytope is at least $(d+1)$

Published on 16 Apr 2026 - 13:10

283

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Prove that a convex $d$-polytope has at least $d+1$ facets

Published on 15 Apr 2026 - 20:18

290

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Partitioning the plane into three sets each intersecting the vertices of every square with side 1?

Published on 15 Apr 2026 - 6:15

80

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Is there a theorem or axiom which shows that permutations of step sequences through a lattice graph result in the same destination?

Published on 10 May 2026 - 15:10

2.5k

Views

Explanations about the volume of a regular simplex

Published on 12 Apr 2026 - 11:50

351

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Euler characteristic of closed surface

Published on 17 Apr 2026 - 7:45

2.7k

Views

How Many Triangles are Created by n Lines in the Plane?

Published on 15 Apr 2026 - 8:57

List Question

On coverings of the complex sphere

What are the facets of the Tridiagonal Birkhoff $d$-polytope $\Omega^t_{d+1}$?

Number of lines needed to pass through every region of a map

Prove Existence of a Circle

dimension of Weber set and selectope (as a operator)

Does a unipotent transformation preserve covolume?

Are there any four-dimensional shapes in the whole wide world?

Proof: Minkowski sum polytope implies A and B polytopes

The number of $(d-1)$-faces in a $d$-polytope is at least $(d+1)$

Prove that a convex $d$-polytope has at least $d+1$ facets

Partitioning the plane into three sets each intersecting the vertices of every square with side 1?

Is there a theorem or axiom which shows that permutations of step sequences through a lattice graph result in the same destination?

Explanations about the volume of a regular simplex

Euler characteristic of closed surface

How Many Triangles are Created by n Lines in the Plane?

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