Eduard Stiefel
Swiss mathematician
Died when: 69 years 218 days (835 months)Star Sign: Taurus
Eduard L.Stiefel (21 April 1909 – 25 November 1978) was a Swiss mathematician.Together with Cornelius Lanczos and Magnus Hestenes, he invented the conjugate gradient method, and gave what is now understood to be a partial construction of the Stiefel–Whitney classes of a real vector bundle, thus co-founding the study of characteristic classes.
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