Events Calendar
WDSS Intermediate R Workshop
April 22, 2024

Basic Notions Seminar - Apurva Nakade (Math)

Date:
Thursday, March 5, 2020
Time:
3:30 pm - 4:30 pm
Location:
Middlesex College (MC)
Room: 107
Cost:
Free

Apurva Nakade (Western University)

Title: What is a Spectrum?

Abstract: By the Brown representability theorem, cohomology theories in algebraic topology are represented by spectra. While it is easy to define an additive structure on these spectrum objects, describing a product structure that reflects the underlying product on cohomology is a surprisingly difficult task. Starting from the classical notion of cohomology theories and sequential spectrum, I will describe how this problem is solved using orthogonal spectra, and time permitting introduce E∞ ring spectra. This talk should be accessible to grad students who know basic algebraic topology, specifically, Brown representability.

E∞

Contact:
Adriana Dimova
adimova2@uwo.ca


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