/ Stars that died in 2023: Ernst Specker, Swiss mathematician (Kochen–Specker theorem), died he was 91.

Monday, December 9, 2013

Ernst Specker, Swiss mathematician (Kochen–Specker theorem), died he was 91.

Ernst Paul Specker  was a Swiss mathematician died he was 91.. Much of his most influential work was on Quine’s New Foundations, a set theory with a universal set, but he is most famous for the Kochen–Specker theorem in quantum mechanics, showing that certain types of hidden variable theories are impossible. He also proved the ordinal partition relation ω2→(ω2,3)2, thereby solving a problem of Erdős.

(11 February 1920 in Zürich, Switzerland – 10 December 2011 in Zürich, Switzerland)

Specker received his Ph.D. in 1949 from ETH Zurich,[1] where he remained throughout his professional career.
See also: Specker sequence.

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