Moritz Firsching

Berlin, Germany

http://page.mi.fu-berlin.de/moritz/

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what-if.xkcd.com: stabbing (simply connected) regions on the 2-sphere with few geodesics

mg.metric-geometry combinatorial-geometry spherical-geometry asked Sep 26, 2014 at 9:52

mathoverflow.net

25 votes

Number of hypercube unfoldings

reference-request graph-theory discrete-geometry hypercube asked May 21, 2018 at 11:50

mathoverflow.net

22 votes

Rational inscribed realization of the regular dodecahedron

mg.metric-geometry discrete-geometry convex-polytopes diophantine-equations asked Mar 21, 2016 at 17:36

mathoverflow.net

15 votes

Hausdorff dimension of Apollonian circle packing, 1.305686729, 1.305688 or yet something else?

mg.metric-geometry hausdorff-dimension circle-packing asked Feb 16, 2016 at 16:50

mathoverflow.net

14 votes

Expected number of lines meeting four given lines or "what is 1.72..."

ag.algebraic-geometry pr.probability integration schubert-calculus numerical-integration asked Jan 26, 2017 at 17:05

mathoverflow.net

12 votes

reference request: rational points on the unit sphere

ag.algebraic-geometry nt.number-theory reference-request ho.history-overview asked Jan 23, 2017 at 15:09

mathoverflow.net

9 votes

Monochromatic point sets in two-colored plane

reference-request mg.metric-geometry discrete-geometry plane-geometry asked Jul 22, 2017 at 14:36

mathoverflow.net

8 votes

Asymptotics of A261668

nt.number-theory reference-request asymptotics zeta-functions asked Sep 13, 2015 at 19:16

mathoverflow.net

7 votes

Order of words disturbed by using polyglossia with rtl language?

xetex amsmath polyglossia hebrew bidi asked Nov 5, 2015 at 11:24

tex.stackexchange.com

6 votes

Expected absolute value of the average of two points from the disc

integration geometric-probability asked Jun 18, 2021 at 12:34

mathoverflow.net

Top Answers

116

Zagier's one-sentence proof of a theorem of Fermat

mathoverflow.net

What programming language should a professional mathematician know?

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Examples of math hoaxes/interesting jokes published on April Fool's day?

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Tweetable Mathematics

mathoverflow.net

Does this geometry theorem have a name?

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How many unit cylinders can touch a unit ball?

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Is there an explicit description of a cobordism between $\mathbb{CP}^n$ and $\mathbb{RP}^n\times\mathbb{RP}^n$?

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Which unfoldings of the hypercube tile 3-space: How to check for isometric space-fillers?

mathoverflow.net

what-if.xkcd.com: stabbing (simply connected) regions on the 2-sphere with few geodesics

mathoverflow.net

First occurrence of "by the usual compactness argument"?

mathoverflow.net

How to check if a box fits in a box?

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Can every simple polytope be inscribed in a sphere?

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What is the source of this E̶r̶d̶ő̶s̶ quote?

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On maximal regular polyhedra inscribed in a regular polyhedron

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Random points on the unit sphere

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Klein's Protocols: A window into our mathematical past

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Largest convex hull of a unit length path

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"Database" of simplicial polytopes/spheres

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Historical quotation search: Equations/formulae in (Latin?) prose, before modern symbolic notation

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Does Gromov's Waist Inequality imply Borsuk-Ulam?

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3D models of the unfoldings of the hypercube?

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Computation of a minimal polynomial

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Proving that a function's image contains (1/n,...,1/n)

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Arranging numbers from $1$ to $n$ such that the sum of every two adjacent numbers is a perfect power

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What are the 4 convex simplicial 4-polytopes that have 6 vertices?

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The $32$-deg polynomial for the tetrahedron inscribed in the icosahedron?

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Weighted area of a Voronoi cell

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Generalization of the equilateral triangle?

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Double kissing problem

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Largest regular $k$-simplex inscribed in a $d$-cube, $k < d$

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