Column orthogonality and the number of irreducible rep same of conjugacy class
Column orthogonality and the number of irreducible rep same of conjugacy class
0:00 start
2:20 Definition of class function
10:00 prove that the number of irreducible representation is the same as the number of conjugacy class
symmetry fusion category
25:00 prove Column orthogonality
33:00 symmetry fusion category
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