[phys4phys] Group for Gravitation, Particle and Fields seminar, Friday 20 January 2023

[Marija Dimitrijevic Ciric]

Dear colleagues,

You are cordially invited to the seminar of the Group for Gravitation, 
Particles and Fields, which will be held on Friday, 20 January 2023 at 
11:00 at the Faculty of Physics, lecture hall 665.


The talk entitled

Introduction to category theory and n-groups (part 4)

is the fourth in the series of seminars on n-groups and categories and 
will be given by Marko Vojinovic (Institute of Physics Belgrade).

Abstract: In the fourth lecture, we finally perform the first step in 
the categorical ladder procedure.
We will first introduce the notion of a 2-category (both the strict and 
weak versions), the
notion of a 2-group, and the notion of a crossed module. Then we will 
discuss various
properties specific to strict 2-groups, their equivalence to crossed 
modules, and a couple
of examples relevant for physics.

The lectures are based on material from papers arXiv:q-alg/9705009 and 
arXiv:1003.4485.

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Time: January 20, 2023 11:00 Belgrade

Faculty of Physics, lecture hall 665, 3rd floor

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Best regards,

Marija Dimitrijevic Ciric

University of Belgrade
Faculty of Physics
Studentski trg 12-16
11000 Belgrade
Serbia