3 lives in this collection worked in general topology, from 1868 to today. Each has a full course on their life and the mathematics and physics they made.
Often together with: set theory. All fields
Founder of general topology and of the theory of ordered sets, creator of Hausdorff measure and dimension, who also wrote philosophy and literature as Paul Mongré.
set theory, general topology, measure theory
French mathematician who introduced metric spaces and abstract compactness and made lasting contributions to functional analysis, topology and probability.
functional analysis, general topology, probability theory
Founder of the Moscow school of topology, who with Pavel Urysohn created the theory of compact spaces and who introduced the nerve of a covering.
general topology, algebraic topology, dimension theory