Hans-Peter Stricker's user avatar
Hans-Peter Stricker's user avatar
Hans-Peter Stricker's user avatar
Hans-Peter Stricker
  • Member for 14 years, 4 months
  • Last seen this week
  • Germany
5 votes
1 answer
462 views

Explaining patterns in modular multiplication graphs

0 votes
1 answer
457 views

Endofunctors of graph categories

2 votes
1 answer
451 views

Possible curvatures of the topological sphere

2 votes
2 answers
447 views

Almost or probably complete graph invariants?

5 votes
2 answers
443 views

Drawing (graphs) by numbers: a minimality question

2 votes
1 answer
425 views

Ways to look at a polyhedral graph

8 votes
1 answer
423 views

Two interacting bodies in an external field

4 votes
1 answer
422 views

Giving the same concept different names in the same paper

4 votes
0 answers
412 views

Interpretations as morphisms

1 vote
2 answers
410 views

Infinite graphs with finitely discriminable vertices

4 votes
3 answers
401 views

How to show that random graphs cannot be embedded with short edges

2 votes
1 answer
388 views

Mysteries of Wolfram's rule 18

2 votes
2 answers
388 views

Equivalence of families of objects with the same counting function

1 vote
1 answer
372 views

Why is $n_{n^2-1}$ the smallest graph that clearly shows the structure of multiplication by $n$?

1 vote
0 answers
369 views

Astonishing affinity of Wolfram's rule 110 to the numbers 2 and 7

1 vote
1 answer
358 views

Naturally definable sets of natural numbers (3)

4 votes
1 answer
357 views

"Is it possible to give a restricted set-theoretical definition of addition of natural numbers in terms of successor?" [Tarski]

-1 votes
1 answer
354 views

Properties of collections (functions) that make them proper classes (uncomputable)

2 votes
2 answers
348 views

"Duals" of Lindenbaum algebras

4 votes
1 answer
341 views

Can the inner structure of an object be systematically deduced from its position in the category? [closed]

0 votes
1 answer
326 views

Definability of arithmetic functions and relations

2 votes
3 answers
324 views

Standard name of "atomic morphisms"?

3 votes
1 answer
313 views

Uniformly computable classes of graphs

0 votes
4 answers
309 views

Deficiency of necessary conditions

2 votes
0 answers
307 views

Generalization of the isoperimetric inequality

2 votes
1 answer
298 views

Self-containing graphs

2 votes
1 answer
292 views

Functions and graphs

4 votes
2 answers
285 views

Goedelizability and decidability of a property of Peano formulas

2 votes
0 answers
281 views

Is homotopy definable by categorical means?

3 votes
0 answers
280 views

Semantics of neural network-like structures

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