full_update_pseudo_invert_r4()

std::tuple< SRDef, STensor > syten::IPEPSv2::full_update_pseudo_invert_r4	(	STensor const &	in,
		Pair< SBasisId, SBasisId >	upper_basis,
		Pair< SBasisId, SBasisId >	lower_basis
	)

Internal helper to invert a rank-4 tensor.

References syten::STensorImpl::demerge(), syten::STensorImpl::flip_on_tensor(), syten::IdentityDenseTensorImpl::merge(), syten::STensorImpl::parity(), syten::STensorImpl::proxy(), and syten::pseudo_invert().

Referenced by full_update_apply_gate().

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