Łukasz Grabowski's user avatar
Łukasz Grabowski's user avatar
Łukasz Grabowski's user avatar
Łukasz Grabowski
  • Member for 14 years, 3 months
  • Last seen more than 1 year ago
65 votes

What recent discoveries have amateur mathematicians made?

11 votes
Accepted

Who is Kirszbraun?

10 votes

What is the oldest open problem in mathematics?

5 votes

Properties of a non-sofic group

4 votes

Construction of a maximal ideal

4 votes

Injectivity implies surjectivity

4 votes
Accepted

Integer vectors in the kernel of an integer matrix

4 votes
Accepted

Extending a bi-invariant metric from a set of generators to the whole group.

3 votes

Basic results with three or more hypotheses

3 votes

Theory of cones

2 votes

Combinatorial results without known combinatorial proofs

2 votes

Graph properties: definability and decidability

1 vote

Functional calculus for direct integrals

1 vote

Decomposition of a dynamical system into ergodic componenents

1 vote

expected number of overlapping edges from k cycles in a graph