Source: wikibot/plus-h-c
= + h.c.
{wiki=+_h.c.}
The term "+ h.c." typically appears in the context of quantum field theory and particle physics, where it stands for "Hermitian conjugate." In mathematical expressions, particularly in Hamiltonians or Lagrangians, a term may be added with "h.c." to indicate that the Hermitian conjugate of the preceding term should also be included in the full expression.