researchseminars.org

Giovanni Soldà (University of Leeds)
2021-01-26 15:00 - 16:00 UTC | https://researchseminars.org/talk/CTA/39/
Title: Rival-Sands principles in the Weihrauch degrees (https://researchseminars.org/talk/CTA/39/)
by Giovanni Soldà (University of Leeds) as part of Computability theory and applications

Abstract
wRSg and wRSgr are consequences of RSg, a theorem about graphs proved in 1980 by Rival and Sands. wRSg and wRSgr can be shown to be equivalent to Ramsey theorem for pairs over RCA_0, but are computationally strictly weaker. In this talk, we will study the Weihrauch degrees associated to these principles, by comparing them with the degrees of other classical theorems introduced in the analysis of RT22. This is a joint work with Marta Fiori Carones and Paul Shafer.
