Topology Seminar

Apr 25

Daniele Celoria, Oxford University

Rational cobordisms and integral homology
Fine Hall 314 / -

We consider the question of when a rational homology 3-sphere is rational homology cobordant to a connected sum of lens spaces. We prove that every rational homology… See Full Abstract

May 02

Juanita Pinzon Caicedo, NCSU

Operations of Infinite Rank in Concordance
Fine Hall 314 / -

Oriented knots are said to be concordant if they cobound an embedded cylinder in the interval times the 3-sphere. This defines an equivalence relation under which the… See Full Abstract