Category theory

Wednesday, October 9, 2013 - 9:00am - 9:50am
I find it convenient to think about persistence in terms of category theory. I will explain why this is natural, and how it simplifies my thinking. Sometimes it gives access to deeper theorems, and more often it is a tidy language that expresses just what I need. Examples will include: sublevelset and interlevelset homology; merge trees and Reeb graphs; generalized factor persistence; a fractional category for physically measurable persistent features; comparison theorems for Cech and Rips complexes.
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