Dr. Richard Klitzing's user avatar
Dr. Richard Klitzing's user avatar
Dr. Richard Klitzing's user avatar
Dr. Richard Klitzing
  • Member for 6 years, 1 month
  • Last seen this week
7 votes
Accepted

What polyhedron is the Dayan Gem VI?

6 votes

For which dimensions does there exist a regular $n$-polytope such that the distance of its vertex to its center equals the length of its side?

4 votes

How many uniform polytopes are there in higher dimensions?

4 votes

Spheres cause contradictions in dimensions $10$ and more?

4 votes

How can you prove that every polyhedron can be dissected into tetrahedrons?

4 votes
Accepted

A novel (?) construction of the regular pentagon with straightedge and compass

4 votes

Apparent existence of a semi-regular polyhedron, but that I cannot find in any table.

4 votes
Accepted

Generalizing the "The Volume of a Cone is a Third that of its Bounding Cylinder" fact

4 votes

Are there such things as infinite-dimensional regular polytopes?

4 votes
Accepted

Show that a diagonal in a pentagon is the golden ratio

4 votes
Accepted

Construct a point with given ratio of distances to sides of an angle

3 votes

Finding constants a and b, given a function and its inverse

3 votes

Packing/tessellating 3 dimensional space fully by polytopes? Give examples.

3 votes
Accepted

Determine angles of a triangle given lengths of its sides

3 votes

What is the volume of the region $S =\{(x, y, z) : |x| + |y| + |z| ≤ 1\}$?

3 votes

Why can't a vertex of a $d$-dimensional polytope be in fewer than $d$ edges?

3 votes
Accepted

Does there exist a higher-dimensional 5-sided "tetrahedron + 1"?

3 votes
Accepted

Proof that integral of uniformly convergent series converges to sum of the integrals

3 votes
Accepted

Does the tree of cuts to make a net of a convex polyhedron correspond to a net of the dual?

3 votes

Differentiability of $f$ if $f = \sum f_k$ and $f_k$ are differentiable at one point

3 votes

The Scutoid, a new shape

3 votes
Accepted

How to find value of intersection point of two circles?

2 votes

Irregular analogue of cube and octahedron.

2 votes
Accepted

What is the Cartesian product of $n$ polygons?

2 votes

Intuition: 5 regular polyhedra, 6 regular 4-polytopes, and then 3 regular d-polytopes

2 votes
Accepted

Is this "co-location" of two $E_6$'s, two $F_4$'s, and one $E_8$ possible?

2 votes

Is the 9-space coordinatizion of the roots of $E_6$ "nicely" related to the 8-space coordinatization of these roots as 72 roots of $E_8$?

2 votes

Simplicial polytope in $\mathbb{R}^n$ with $n+2$ vertices

2 votes
Accepted

Finding the furthest point on an arc from a line segment

2 votes

Writing out rules?

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