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Willem de Sitter
(redirected from De Sitter)

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Noun1.Willem de Sitter - Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)


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Rendezvous for Dinner Chuck Byers &Tom Berki de Sitter Publications 1288 Ritson Road North, Suite 417, Oshawa, ON L1G 8B2, Canada c/o ISBS 920 NE 58th Avenue, Suite 300, Portland, OR 97213-3786 1897160186 $19.
Their topics include branes and stability, geometric transitions, non-Kahler geometries and string vacua, the K-theory of smooth DM stacks, Gromov-Witten, Gopakumar-Vafa and Donaldson-thomas invariants of Calabi-Yau threefolds, flux compactification geometries and de Sitter vacua in M-theory, N=4 super Yang-mills-theory and integrable spin chains, Yang-Mills amplitures from twistor string theory, and notes on correlation functions in (0,2) theories.
Cautioning his colleagues not to go overboard in their enthusiasm, Peebles recalled the words of a cosmologist of an earlier era, Willem de Sitter, who admonished in 1931 that "it should not be forgotten that all this talk about the universe involves a tremendous extrapolation, which is a very dangerous operation.
 
 
 
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