14) Let G {(aij) E GL„(F)|a;j = 0 if i > j, and a11 a22 ann}, where F is a field, be the group of upper triangular matrices all of whose diagonal entries are equal. Prove that G = D x U, where D is the group of all non-zero multiples of the identity matrix and U is the triangular matrices with 1's down the diagonal. group of upper
14) Let G {(aij) E GL„(F)|a;j = 0 if i > j, and a11 a22 ann}, where F is a field, be the group of upper triangular matrices all of whose diagonal entries are equal. Prove that G = D x U, where D is the group of all non-zero multiples of the identity matrix and U is the triangular matrices with 1's down the diagonal. group of upper
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 13EQ
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Im trying answer the attached for abstract algebra. I think I need a map from SL_nR to GL_nR, but Im not sure. Can you please assist, Thanks in advance.
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