Peter Heinig

top accounts reputation activity subscriptions

Did Hilbert laugh?

reference-request ho.history-overview asked Mar 1, 2018 at 17:21

mathoverflow.net

27 votes

How did the refereeing system of Gösta Mittag-Leffler's Acta Mathematica function from 1882 to (about) 1918?

ho.history-overview refereeing asked Jul 12, 2017 at 7:21

mathoverflow.net

24 votes

Has anything (other than what is in the obituary written by M. Noether) survived of Paul Gordan's defense of infinitesimals?

reference-request ho.history-overview nonstandard-analysis infinitesimals asked Sep 14, 2017 at 15:00

mathoverflow.net

18 votes

Does there exist a graph with maximum degree 8, chromatic number 8, clique number 6?

graph-theory graph-colorings asked Oct 18, 2017 at 10:04

mathoverflow.net

13 votes

Where did Zermelo first model the natural numbers by iterates of the singleton operator, and have the definitions been compared by himself?

reference-request set-theory soft-question ho.history-overview math-education-history asked Jun 29, 2017 at 15:32

mathoverflow.net

11 votes

Detailed modern references for basic properties of Pfaffians over commutative rings

reference-request ac.commutative-algebra matrices algebraic-combinatorics pfaffian asked Sep 4, 2017 at 20:40

mathoverflow.net

10 votes

Extracting coordinates (of a node), and the one-node-path-trick

tikz-pgf vector asked Jul 16, 2017 at 7:05

tex.stackexchange.com

9 votes

Why does a perfectly-identical repetition of a drawing command given within an earlier loop 𝘯𝘰𝘵 produce exactly the same line?

tikz-pgf foreach technical-drawing tikz-graphdrawing asked May 25, 2019 at 16:57

tex.stackexchange.com

7 votes

Is there a convex three-dimensional body with constant width and only finitely-many equilibria? Or: do spheroform gömböcök exist?

mg.metric-geometry curves-and-surfaces classical-mechanics curvature asked Mar 3, 2018 at 20:34

mathoverflow.net

7 votes

F. Schoblik's announced ''ausführliche Darstellung": a lost wrong proof of the Four Color Theorem?

mathematics biographical-details combinatorics asked Aug 24, 2017 at 12:46

hsm.stackexchange.com

Top Answers

Endless controversy about the correctness of significant papers

mathoverflow.net

Mathematical games interesting to both you and a 5+-year-old child

mathoverflow.net

Contemporary philosophy of mathematics

mathoverflow.net

Is every positive integer the permanent of some 0-1 matrix?

mathoverflow.net

Does there exist a graph with maximum degree 8, chromatic number 8, clique number 6?

mathoverflow.net

Interpretations and models of permanent

mathoverflow.net

Examples of common false beliefs in mathematics

mathoverflow.net

Where did Zermelo first model the natural numbers by iterates of the singleton operator, and have the definitions been compared by himself?

mathoverflow.net

Concepts in topology successfully transferred to graph theory and combinatorics with non-trivial applications?

mathoverflow.net

Use of $\implies$ and $=$ when stricter conditions are true

math.stackexchange.com

Why is it called linear logic?

math.stackexchange.com

History of the abstract method in mathematics

mathoverflow.net

Graph automorphism group

mathoverflow.net

Hermann Weyl's work on combinatorial topology and Kirchhoff's current law in Spanish

mathoverflow.net

What topological ideas did Gauss introduce to his student Möbius?

hsm.stackexchange.com

Why aren't functions used predominantly as a model for mathematics instead of set theory etc.?

mathoverflow.net

String diagrams for bimonoidal categories (a.k.a. rig categories)?

mathoverflow.net

English Reference for the Bénabou-Roubaud theorem

mathoverflow.net

Non-isomorphic graphs with bijective graph homomorphisms in both directions between them

mathoverflow.net

Sophus Lie's contribution to solution of problems of variational type as in Euler and Lagrange

mathoverflow.net

Does there exist a nonsingular graph for which the determinant of its adjacency matrix remains the same upon deleting a vertex?

mathoverflow.net

Seeking numbers of German mathematics professors in 1890

hsm.stackexchange.com

What is an example of a non standard model of Peano Arithmetic?

math.stackexchange.com

Number of non-equivalent graph embeddings

mathoverflow.net

English Reference for the Bénabou-Roubaud theorem

mathoverflow.net

Measurable maximal independent set in infinite graph of bounded degree

mathoverflow.net

Where on the internet I can find a database of graphs?

mathoverflow.net

Is V, the Universe of Sets, a fixed object?

mathoverflow.net

Graph signature?

math.stackexchange.com

Understanding the philosophy behind the axiomatic definition of reals

math.stackexchange.com