On some mathematical topics I found interesting.
Some surprising but elementary facts in infinite-dimensional topology
Polygons inscribed in curves
Brouwer’s Topological Degree (V): Borsuk Theorem
Brouwer’s Topological Degree (IV): Jordan Curve Theorem
Brouwer’s Topological Degree (III): First Applications
Brouwer’s Topological Degree (II): An Axiomatic Definition
« Older posts
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
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