minus_on_swap()

bool syten::minus_on_swap	(	Sector const &	a,
		Sector const &	b
	)

Returns true if swapping the two sectors induces a minus sign.

References isFermionic().

Referenced by syten::MPS::Lat::genParity(), genSwap(), insertSwap(), is_perm_fermionic(), and syten::TensorProd::prod_impl().

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