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Barcelona Algebraic Topology Group

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Friday's Topology Seminar 2019-2020

Speaker: Michelle Strumila (University of Melbourne)
Title:
Infinity operads and their generalisations
Place:
Room Seminar C3b
Date: Monday September 9th, 15:00

Abstract: Infinity categories are a way of taking categories up to homotopy.  This talk is about how this can be extended to infinity operads, along with generalisations to the non-directional and higher genus cases.

See the calendar for upcoming events.

Speaker: Eva Belmont (Northwestern University)
Title:
The motivic Adams spectral sequence
Place:
Room Seminar C3b
Date: Friday September 6th, 11:00-11:45

Abstract: The Adams spectral sequence is one of the main tools for computing stable homotopy groups of spheres. In this talk, I will give an introduction to the Adams spectral sequence in motivic homotopy theory over C and over R, and describe some connections with classical and C_2-equivariant homotopy theory. I will describe joint work with Dan Isaksen to compute the motivic Adams spectral sequence over R and obtain applications to the Mahowald invariant.


Speaker: Assaf Libman (Aberdeen University)
Title: Selfmaps of equivariant spheres
Place: Room Seminar C1/366
Date: Friday September 6th, 12:00-13:00
Abstract: We describe a stabilization property of the homotopy groups of space of equivariant self maps of spheres with action of a finite group G. This result gives an extension (of a special case of) tom-Dieck's splitting theorem to incomplete universes.