Decomposition matrices for quasi-isolated blocks of exceptional groups

51 mins 41 secs,  189.04 MB,  iPod Video  480x270,  29.97 fps,  44100 Hz,  499.38 kbits/sec
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Description: Farrell, N
Tuesday 10th March 2020 - 11:00 to 12:00
 
Created: 2020-03-11 16:16
Collection: Groups, representations and applications: new perspectives
Publisher: Isaac Newton Institute
Copyright: Farrell, N
Language: eng (English)
Distribution: World     (downloadable)
Explicit content: No
Aspect Ratio: 16:9
Screencast: No
Bumper: UCS Default
Trailer: UCS Default
 
Abstract: Decomposition numbers encapsulate the relationship between ordinary and modular representations of finite groups. Determining decomposition matrices is a difficult problem, particularly for the finite groups of Lie type in non-defining characteristic. I will present some recent developments which allow us to consider tackling this problem for the quasi-isolated blocks of finite groups of Lie type in non-defining characteristic, and discuss some of the strategies and challenges involved in this project.
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