Commit 2024-01-09 14:39 9d2a0f8b

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feat: provide the ℓ² operator norm on matrices (#9474) This adds the (unique) C⋆-norm on matrices Matrix n n š•œ with IsROrC š•œ within the scope Matrix.L2OpNorm. This norm coincides with the operator norm induced by the ℓ² norm (i.e., the norm on Matrix m n š•œ obtained by pulling back the norm from EuclideanSpace š•œ n →L[š•œ] EuclideanSpace š•œ m). Where possible, we state results for rectangular matrices.

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