User Oscar Cunningham - MathOverflow

Oscar Cunningham

Member for 14 years, 9 months
Last seen this week

oscarcunningham.com
United Kingdom

11 Answers

Score Activity Newest

30 votes

Decision problems for which it is unknown whether they are decidable

answered Nov 6, 2019 at 16:30

22 votes

Results true in a dimension and false for higher dimensions

answered Sep 17, 2014 at 13:01

21 votes

Nuances Regarding Naturality

answered Jul 11, 2016 at 22:43

17 votes

How can one construct a four-coloring of a tiling of the plane with Smith, Myers, Kaplan, and Goodman-Strauss's aperiodic monotile?

answered Mar 25, 2023 at 9:05

16 votes

Big list of comonads

answered Apr 21, 2019 at 5:56

8 votes

Accepted

Projecting a symmetric matrix onto the space of linear operators with a particular eigenvalue

answered Oct 3, 2019 at 16:30

5 votes

Atlas-like websites on specific areas of mathematics

answered Mar 7, 2020 at 18:52

5 votes

Accepted

Existence of "Continuous paths" in categories as directed systems

answered Apr 15, 2017 at 21:39

2 votes

What information is lost in $X \to \mathrm{Sh}(X)$?

answered Feb 21, 2018 at 18:28

1 vote

How can one represent vector addition diagrammatically in categorical quantum mechanics?

answered Dec 15, 2016 at 17:25

-2 votes

Examples of theorems with proofs that have dramatically improved over time

answered May 10, 2020 at 10:40