Computability learning seminarExport this event to calendar

Wednesday, May 30, 2012 — 3:30 PM to 4:30 PM EDT

Matthew Harrison-Trainor, Pure Mathematics Department,  University of Waterloo

Omitting Partial Types and Hyperimmune Degrees

We will show that hyperimmune degrees are able to omit non-principal partial types, and in fact are the only such types. By seeing that this proof can be carried out in RCA0, we will show that omitting partial types and the existence of hyperimmune degrees are equivalent over RCA0.

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