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Results tagged with fa.functional-analysis
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user 520509
Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.
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A question in functional analysis about selfadjoint operator [closed]
In Hilbert space $u$, Let $T_1$,$T_2$ is selfadjoint operator, if exit $c>0$ such that $cI\le T_1\le T_2$, prove $T_1$,$T_2$ have a bounded inverse operator and $c^{-1}I\ge T_1^{-1}\ge T_2^{-1}$.
I ha …
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