decontractToPhysicalPhysical() [1/2]

std::tuple< SRDef, STensor, STensor, STensor, SBasisId, SBasisId > syten::T3N::Contraction::decontractToPhysicalPhysical	(	STensor	t,
		SBasisId const &	p,
		SBasisId const &	r,
		Truncation const &	trunc
	)

Takes a physical physical contraction and seperates it along the higher root leg.

References syten::STensorImpl::demerge(), syten::IdentityDenseTensorImpl::merge(), syten::singValSqdToError(), syten::STensorImpl::snorm(), syten::STensorImpl::svd(), and std::tie().

Referenced by syten::T3N::Contraction::decontractToPhysicalPhysical().

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