Ib Madsen

Danish mathematician · Denmark · On the map · Academics · Born 1942 · age 84

Ib Henning Madsen is a Danish mathematician, a professor of mathematics at the University of Copenhagen. He is known for proving the Mumford conjecture on the cohomology of the stable mapping class group, and for developing topological cyclic homology theory.

Ib Madsen is read about 4 times a day, in 6 languages.

A typical day, 30 days to 15 June 2026

The middle day of the days counted, so one week of news cannot move it. The line under it is the last 60 days, one point a day.

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