Ernst Paul Specker (11 February 1920, Zürich – 10 December 2011, Zürich) was a Swiss mathematician. 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.
Specker received his Ph.D. in 1949 from ETH Zurich,[1] where he remained throughout his professional career.
See also
[edit]References
[edit]External links
[edit]- Biography Archived 2008-03-17 at the Wayback Machine at the University of St. Andrews
- Ernst Specker (1920-2011), Martin Fürer, January 25, 2012.
- Ernst Specker: Selecta, Birkhauser, 1990.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction