@johncarlosbaez Thank you. Are that construction of GL and the fact that GL(2, Z) is not just the SL(2, Z) times Z2, but a semidirect-product of them related in some way?
@johncarlosbaez Excuse me, thank you for the nice explanation! I have a question, is there any group larger than the SL(2, Z) which still has some nice properties, e.g. notion of modular forms? I wonder how we can distinguish the black and yellow regions in your figure, since they are combined into the fundamental region of SL(2, Z). If we consider some congruence subgroups, the ability to distinguish becomes weaker, but I don't know if we can consider the group containing contains SL(2, Z) and distinguish the yellow and black regions. Thank you!
@onekodate 急に呼び出したけどごめんね、ありがとう
#NowPlaying Reset / Reset 配信限定エディション / Yui Makino
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https://arxiv.org/abs/2211.01421
Modern Machine Learning for LHC Physicists
Tilman Plehn, Anja Butter, Barry Dillon, Claudius Krause
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※Theoretical Physics, Ph.D. student
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