De Harvey Friedman: "Gerald E. Sacks, my thesis advisor, died October 4 at the age of 86, after a long illness. He was a pioneer in recursion theory, and is particularly noted for his celebrated Sacks Density Theorem (there is an r.e. degree strictly between any two different comparable r.e. degrees) and Sacks forcing (forcing with perfect trees, which he used to construct models of ZFC with a minimal degree of nonconstructibility).
Gerald was honored In 1994, when the Association of Symbolic Logic established the Sacks Prize in his name, which is awarded annually for the most outstanding doctoral dissertation in mathematical logic. Gerald supervised over 30 students, several of whom are among the most visible logicians in the world." -- ----------------------------------------------- Walter Carnielli https://waltercarnielli.com/ Centre for Logic, Epistemology and the History of Science and Department of Philosophy State University of Campinas –UNICAMP 13083-859 Campinas -SP, Brazil CV Lattes : http://lattes.cnpq.br/1055555496835379 -- Você está recebendo esta mensagem porque se inscreveu no grupo "LOGICA-L" dos Grupos do Google. Para cancelar inscrição nesse grupo e parar de receber e-mails dele, envie um e-mail para [email protected]. Para ver esta discussão na web, acesse https://groups.google.com/a/dimap.ufrn.br/d/msgid/logica-l/CA%2Bob58OrrVDPd0jnQ5ucoeHWyQ7usPhcemy8R0o3gj3PzmXeyQ%40mail.gmail.com.
