Prove the following infinite-dimensional version of Theorem 1.7: Let ß be a subset of an infinite-dimensional vector space V. Then ß is a basis for V if and only.if, for each nonzero vector y in V, there exist unique vectors X1, ...,Xn in ß and unique nonzero scalars C1,...,Cn such that y = C1X1 +...+ CnXn
Prove the following infinite-dimensional version of Theorem 1.7: Let ß be a subset of an infinite-dimensional vector space V. Then ß is a basis for V if and only.if, for each nonzero vector y in V, there exist unique vectors X1, ...,Xn in ß and unique nonzero scalars C1,...,Cn such that y = C1X1 +...+ CnXn
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Prove the following infinite-dimensional version of Theorem 1.7: Let ß be a
subset of an infinite-dimensional vector space V. Then ß is a basis for V if and only.if, for each nonzero vector y in V, there exist unique
ß and unique nonzero scalars C1,...,Cn such that y = C1X1 +...+ CnXn
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