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15
263
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Equivalent characterisation of hypothesis & conclusion in Grothendieck's inequality

Published on
#matrices #inequality #hilbert-spaces
656
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GNS construction and separability.

Published on
#hilbert-spaces #c-star-algebras #von-neumann-algebras #separable-spaces
1.1k
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Examples of when the Riesz representation theorem doesn't hold

Published on
#linear-algebra #functional-analysis #hilbert-spaces #examples-counterexamples #riesz-representation-theorem
25
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Steps in proof of relationship between inner product and norm

Published on
#analysis #hilbert-spaces
48
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Intuitive understanding of relationship between inner product and norm

Published on
#hilbert-spaces #inner-products
1.1k
Views

Riesz representation theorem - yet another "counter example"

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#functional-analysis #proof-verification #hilbert-spaces #examples-counterexamples #riesz-representation-theorem
872
Views

Question about Hilbert–Schmidt operator and its inverse

Published on
#real-analysis #linear-algebra #functional-analysis #operator-theory #hilbert-spaces
1.3k
Views

Need help in proving $P$ is a projection.

Published on
#functional-analysis #hilbert-spaces #banach-spaces #idempotents
139
Views

Searching for examples of "graph algebras"

Published on
#general-topology #group-theory #graph-theory #ring-theory #hilbert-spaces
127
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Inequalities that need only be checked on a dense subspace

Published on
#functional-analysis #hilbert-spaces #harmonic-analysis
27
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Prove that operator cannot "shrink" vectors too much

Published on
#operator-theory #hilbert-spaces
693
Views

Every closed subset of a Hilbert space has a complement.

Published on
#functional-analysis #analysis #hilbert-spaces
388
Views

Kernel of a projection in Hilbert space

Published on
#functional-analysis #hilbert-spaces #projection
58
Views

Sign of exponential in Fourier Coefficient

Published on
#fourier-analysis #hilbert-spaces #fourier-series
85
Views

Showing an adjunct operator is well defined.

Published on
#operator-theory #hilbert-spaces

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