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Results tagged with fa.functional-analysis
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user 175318
Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.
-1
votes
1
answer
117
views
Sobolev injections [closed]
It is true to write that
$W^{1,\infty}(]0,\infty[) \hookrightarrow C([0,\infty[)$ et $W^{1,1}(]0,\infty[) \hookrightarrow C([0,\infty[)$ ?
Thanks
- 19
1
vote
0
answers
88
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Derivation in Sobolev space [closed]
Let $f\in W^{1,\infty}(]0,T[)$ $(0<T\le\infty)$ such that
$f(x)>0$ a.e. $x\in\mathopen]0,T[$ and let
$$g(x)=e^{-\int_0^x \frac{ds}{f(s)}}$$
Formally $g' = -\frac{1}{f}g$.
How can I justify this deriva …
- 19