full_update_cond_num()

SRDef syten::IPEPSv2::full_update_cond_num	(	STensor const &	in,
		Pair< SBasisId, SBasisId >	upper_basis
	)

Internal helper to calculate the condition number of a rank-4 tensor.

References syten::diagonal(), syten::STensorImpl::flip_on_tensor(), syten::IdentityDenseTensorImpl::merge(), syten::real(), syten::STensorImpl::snorm(), and syten::STensorImpl::svd().

Referenced by full_update_gauge_fix().

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