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A homework assignment from math 110, section 7, fall 2003, focusing on the relationship between linear independence of vectors in an inner product space and the invertibility of their grammatian matrices. The assignment includes exercises to prove this theorem, with one problem asking to prove the equivalence of linear independence and invertible grammatian matrices.
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Math 110, Section 7 Fall 2003 Sarason
Due in class on Friday, October 31.
Pages 124–125, Exercises 21, 24, 26, 28, 29, 30, 31, plus Exercise G below.
G. Let v 1 , v 2 ,... , vn be vectors in an inner product space. The Grammian G(v 1 ,... , vn) of v 1 ,... , vn is the n × n matrix whose (j, k)th^ entry is 〈vj , vk〉. Prove that v 1 ,... , vn are linearly independent if and only if G(v 1 ,... , vn) is invertible.