Topology Seminar

Apr 25

Daniele Celoria, Oxford University

Rational cobordisms and integral homology

Fine Hall 314 / 4:30 PM - 5:30 PM

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

See Full Abstract

May 02

Juanita Pinzon Caicedo, NCSU

Operations of Infinite Rank in Concordance

Fine Hall 314 / 4:30 PM - 5:30 PM

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

See Full Abstract