Exercise 3.F.28

Answers

Proof. Similarly to Exercise 27, we have

range T = v V : ψ(v) = 0 for every ψ (range T)0 =

v V : ψ(v) = 0 for every ψ null T

=

v V : ψ(v) = 0 for every ψ span (φ)

=

v V : φ(v) = 0

=

v V : v null φ

= null φ

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2017-10-06 00:00
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