If A = (aij) = Cnxn, A₁,..., An are the eigenvalues of A. Show that n m n Σ²² ≤[[|aj|² i=1 i=1 j=1 and they equal if and only if A is a normal matrix.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.4: Orthogonal Diagonalization Of Symmetric Matrices
Problem 16EQ
icon
Related questions
Question
7. If A = (a,j) € Cnxn, A₁,..., n are the eigenvalues of A. Show that
n
m n
Σιλβ≤ΣΣΙ;;|2
i=1j=1
i=1
and they equal if and only if A is a normal matrix.
Transcribed Image Text:7. If A = (a,j) € Cnxn, A₁,..., n are the eigenvalues of A. Show that n m n Σιλβ≤ΣΣΙ;;|2 i=1j=1 i=1 and they equal if and only if A is a normal matrix.
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Recommended textbooks for you
Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
Algebra
ISBN:
9781285463247
Author:
David Poole
Publisher:
Cengage Learning
Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
Algebra
ISBN:
9781305658004
Author:
Ron Larson
Publisher:
Cengage Learning
Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage
College Algebra
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Algebra and Trigonometry (MindTap Course List)
Algebra and Trigonometry (MindTap Course List)
Algebra
ISBN:
9781305071742
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Elements Of Modern Algebra
Elements Of Modern Algebra
Algebra
ISBN:
9781285463230
Author:
Gilbert, Linda, Jimmie
Publisher:
Cengage Learning,