On some mathematical topics I found interesting.
Weak Tarski’s problem: Groups having the same universal theory as a free group
A free group contains a free group of any rank
When does a finite metric space embed isometrically into an euclidean space?
Exploring the works of Gilbert Baumslag
Gödel Lost Lettre and P=NP
Geometric Group Theory
Geometry and the Imagination
Here there be dragons
Image des Mathématiques
Low Dimensional Topology
Blog at WordPress.com.
To find out more, including how to control cookies, see here: