Suppose that U is a 3-by-3 unitary matrix. Prove that U is a normal matrix and prove that there exists an orthonormal basis u1, U2, U3 of C° and complex numbers C1, C2, C3 with U = c¡u¡u* + c2u2u" + c3U3u such that |c|| = |c2| = |c3| = 1.
Suppose that U is a 3-by-3 unitary matrix. Prove that U is a normal matrix and prove that there exists an orthonormal basis u1, U2, U3 of C° and complex numbers C1, C2, C3 with U = c¡u¡u* + c2u2u" + c3U3u such that |c|| = |c2| = |c3| = 1.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.6: Matrices
Problem 21E: Suppose that A is an invertible matrix over and O is a zero matrix. Prove that if AX=O, then X=O.
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