Georges de Rham
Mathematician, Academic
1903 – 1990
Who was Georges de Rham?
Georges de Rham was a Swiss mathematician, known for his contributions to differential topology.
He studied at the University of Lausanne and then in Paris for a doctorate, becoming a lecturer in Lausanne in 1931; where he held positions until retirement in 1971; he held positions in Geneva in parallel.
In 1931 he proved de Rham's theorem, identifying the de Rham cohomology groups as topological invariants. This proof can be considered as sought-after, since the result was implicit in the points of view of Henri Poincaré and Élie Cartan. The first proof of the general Stokes' theorem, for example, is attributed to Poincaré, in 1899. At the time there was no cohomology theory, one could reasonably say: for manifolds the homology theory was known to be self-dual with the switch of dimension to codimension. That is true, anyway, for orientable manifolds, an orientation being in differential form terms an n-form that is never zero. The duality can be reformulated, to great advantage, in terms of the Hodge dual—intuitively, 'divide into' an orientation form—as it was in the years succeeding the theorem.
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- Born
- Sep 10, 1903
Roche - Nationality
- Switzerland
- Profession
- Education
- University of Paris
- University of Lausanne
- Died
- Oct 9, 1990
Lausanne
Submitted
on July 23, 2013
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