Composition of absolutely continuous function

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if I have a function $x:[0,infty)rightarrow H$ (H is an hilbert space) that is absolutely continuous (AC), why should the function $|x(t)-y|^2$ be AC, for $yin H$?
Yet again, why should $|x_lambda(t)-x_mu(t)|^2$ be AC if both $x_lambda$ and $x_mu$ are AC?
Thank you in advance
real-analysis analysis hilbert-spaces absolute-continuity
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up vote
0
down vote
favorite
if I have a function $x:[0,infty)rightarrow H$ (H is an hilbert space) that is absolutely continuous (AC), why should the function $|x(t)-y|^2$ be AC, for $yin H$?
Yet again, why should $|x_lambda(t)-x_mu(t)|^2$ be AC if both $x_lambda$ and $x_mu$ are AC?
Thank you in advance
real-analysis analysis hilbert-spaces absolute-continuity
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
if I have a function $x:[0,infty)rightarrow H$ (H is an hilbert space) that is absolutely continuous (AC), why should the function $|x(t)-y|^2$ be AC, for $yin H$?
Yet again, why should $|x_lambda(t)-x_mu(t)|^2$ be AC if both $x_lambda$ and $x_mu$ are AC?
Thank you in advance
real-analysis analysis hilbert-spaces absolute-continuity
if I have a function $x:[0,infty)rightarrow H$ (H is an hilbert space) that is absolutely continuous (AC), why should the function $|x(t)-y|^2$ be AC, for $yin H$?
Yet again, why should $|x_lambda(t)-x_mu(t)|^2$ be AC if both $x_lambda$ and $x_mu$ are AC?
Thank you in advance
real-analysis analysis hilbert-spaces absolute-continuity
asked Aug 17 at 23:12
Paolo
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356
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