In this paper, the unitarily invariant norm ∥·∥ on 𝕔m×n is used. We first discuss the problem under what case, a rectangular matrix A has minimum condition number K(A) = ∥A∥ ∥A⁺∥, where A⁺ designates ...

This is a preview. Log in through your library . Abstract We survey and compare a wide variety of techniques for estimating the condition number of a triangular matrix, and make recommendations ...