20. Let V be a finite-dimensional inner product space and let U be a linear operator on V. Then U is unitary if and only if the matrix of U in some (or every) ordered orthonormal basis is a unitary matrix.
20. Let V be a finite-dimensional inner product space and let U be a linear operator on V. Then U is unitary if and only if the matrix of U in some (or every) ordered orthonormal basis is a unitary matrix.
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Linear Transformations
Section6.3: Matrices For Linear Transformations
Problem 52E: Let T be a linear transformation T such that T(v)=kv for v in Rn. Find the standard matrix for T.
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