The Category of Sets according to Stratified Set Theories
- đ¤ Speaker: Thomas Forster, DPMMS
- đ Date & Time: Tuesday 21 January 2014, 14:15 - 15:15
- đ Venue: MR5, Centre for Mathematical Sciences
Abstract
It is an old result of McLarty’s that, according to NF, the category of sets is not cartesian closed. NF has a universal set, but that is not the only reason for the result. The assertion that the universe of sets is cartesian-closed has significant consistency strength in set theories all of whose axioms are stratified, and McLarty’s result is the tip of an iceberg, some of which I shall try to reveal on Tuesday.
Series This talk is part of the Category Theory Seminar series.
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Thomas Forster, DPMMS
Tuesday 21 January 2014, 14:15-15:15