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Comment on “Geometric phase, bundle classification, and group representation” [J. Math. Phys. <b>37</b>, 1218 (1996)]
This note is a comment on the mathematical aspects of the paper by Mostafazadeh [J. Math. Phys. 37, 1218 (1996)]. Its aim is to remove some of the ambiguities and mistakes of the paper by making more transparent the mathematics involved in the calculation of topological charges.