◆ cond_number() [1/2]

SRDef syten::IPEPS::cond_number ( Tensor< 2 > const &  inp)

Returns the condition number of a rank-2 tensor by calculating the ratio of its largest and smallest-larger-than-SYTEN_SMALL_THRESHOLD singular value.

References syten::diagonal(), syten::norm(), syten::real(), syten::SVD::svd(), and SYTEN_SMALL_THRESHOLD.

Referenced by cond_number(), and gauge_fix().

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