Hans-Peter Stricker

Germany

I am interested in

economics and ecology
neuroscience and psychology
arts and philosophy
mathematics
visualizations

My e-mail address: stricker @ syspedia.de

top accounts reputation activity subscriptions

Theorems with an extraordinary exception or a small number of sporadic exceptions

soft-question big-list asked Aug 24, 2012 at 0:29

math.stackexchange.com

91 votes

What is a universal property?

category-theory definition universal-property asked Sep 9, 2011 at 17:23

math.stackexchange.com

64 votes

Non-associative operations

abstract-algebra examples-counterexamples big-list asked Aug 23, 2018 at 17:07

math.stackexchange.com

60 votes

Why is it worth spending time on type theory?

category-theory foundations type-theory asked Nov 14, 2013 at 20:44

math.stackexchange.com

52 votes

Hidden patterns in $\sin(a x^2)$

trigonometry asked Apr 20, 2017 at 8:23

math.stackexchange.com

49 votes

What is Yoneda's Lemma a generalization of?

ct.category-theory examples big-list asked Jan 21, 2010 at 7:48

mathoverflow.net

46 votes

What is (a) geometry?

geometry asked Sep 6, 2012 at 19:56

math.stackexchange.com

43 votes

Origins of names of algebraic structures

soft-question ho.history-overview asked Aug 11, 2010 at 22:30

mathoverflow.net

39 votes

Spectral graph theory: Interpretability of eigenvalues and -vectors

graph-theory intuition asked May 17, 2010 at 8:09

mathoverflow.net

39 votes

Proof without words of $\oint zdz = 0$ and $\oint dz/z = 2\pi i$

integration complex-analysis contour-integration residue-calculus visualization asked Jan 21, 2019 at 11:17

math.stackexchange.com

Top Answers

What are some examples of colorful language in serious mathematics papers?

mathoverflow.net

Proofs without words

mathoverflow.net

When are two proofs of the same theorem really different proofs

mathoverflow.net

Interesting mathematical topics arising from biology

mathoverflow.net

What is Realistic Mathematics?

mathoverflow.net

How useful is Turing completeness? are neural nets turing complete?

stackoverflow.com

What are some examples of colorful language in serious mathematics papers?

mathoverflow.net

What is a universal property?

math.stackexchange.com

Is Mathematics always correct?

philosophy.stackexchange.com

Thinking and Explaining

mathoverflow.net

Examples of results which were surprising but later shown to be natural.

mathoverflow.net

Prominent non-mathematical work of mathematicians

mathoverflow.net

Hidden patterns in $\sin(a x^2)$

math.stackexchange.com

An enigmatic pattern in division graphs

math.stackexchange.com

What is combinatorics?

math.stackexchange.com

The ABC of categories: ABstract vs Concrete

mathoverflow.net

Intuitive understanding of why the sum of nth roots of unity is $0$

math.stackexchange.com