I came across the following equation $$ A = UAV + h.c. $$ For example, please see Eqn (2) in here.
But I have no idea what h.c. stands for... It seems that it comes from some physics.
Any comments or answers will be appreciated. Thanks.
2026-03-26 12:43:36.1774529016
What h.c. stands for?
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In physics, the abbreviation "h.c." usually stands for "Hermitian conjugate." So, $UAV + h.c. = UAV + (UAV)^\dagger$, where $M^\dagger$ denotes the Hermitian conjugate of the operator $M$.