List questions from discrete-geometry

Published on 04 Sep 2014 - 23:46

123

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

Published on 22 Mar 2026 - 19:12

86

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

Published on 26 Sep 2014 - 20:36

1.6k

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Prove Existence of a Circle

Published on 07 Oct 2014 - 18:45

88

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dimension of Weber set and selectope (as a operator)

Published on 08 Oct 2014 - 8:58

86

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Does a unipotent transformation preserve covolume?

Published on 14 Oct 2014 - 12:50

309

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

Published on 21 Oct 2014 - 22:55

694

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Proof: Minkowski sum polytope implies A and B polytopes

Published on 22 Oct 2014 - 6:28

337

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

Published on 28 Oct 2014 - 15:26

280

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

Published on 28 Oct 2014 - 18:44

288

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

Published on 25 Mar 2026 - 14:23

77

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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 25 Mar 2026 - 11:07

2.5k

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Explanations about the volume of a regular simplex

Published on 18 Nov 2014 - 11:28

346

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Euler characteristic of closed surface

Published on 21 Nov 2014 - 16:17

2.7k

Views

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

Published on 01 Dec 2014 - 4:51

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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