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$C^*$-algebra (Definition)
CAxiom

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"$C^*$-algebra" is owned by asteroid. [ full author list (4) | owner history (2) ]
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See Also: group $C^*$-algebra, von Neumann algebra, noncommutative geometry, groupoid C*-convolution algebras, groupoid C*-dynamical system, compact quantum groupoids related to C*-algebras, nuclear C*-algebra, $C^*$-algebra homomorphisms are continuous, continuous linear mapping, operator norm, uniform continuity over locally compact quantum groupoids, $C^*$-algebra, norm and spectral radius in $C^*$-algebras, equivalence of definitions of $C^*$-algebra, decomposition of self-adjoint elements in positive and negative parts, Gelfand-Naimark-Segal construction, Gelfand transform

Other names:  C*-algebra, C* algebra
Also defines:  $C^*$ axiom
Keywords:  C*-algebra properties, relation to groupoids, norm and spectral radius, noncommutative C*-algebras, C*-axiom

Attachments:
bounded operators on a Hilbert space form a $C^*$-algebra (Result) by HkBst
example of Banach algebra which is not a $C^*$-algebra for any involution (Example) by asteroid
special elements in a $C^*$-algebra and their spectral properties (Definition) by asteroid
norm and spectral radius in $C^*$-algebras (Theorem) by asteroid
$C^*$-algebra homomorphisms are continuous (Theorem) by asteroid
equivalence of definitions of $C^*$-algebra (Theorem) by rspuzio
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Cross-references: von Neumann algebras, essential supremum, pointwise operations, measure space, ideal, compact operators, open, closed, Gelfand-Naimark representation theorem, information, link, Noncommutative Topology, projections, connected, unitization, compactification, topological space, properties, Gelfand-Naimark theorem, commutative, functional analysis, theorem, operator norm, adjoint, bounded operators, inner product, vanish at infinity, locally compact Hausdorff space, locally compact, limit, uniform convergence, pointwise, operation, Hausdorff topological space, compact, class, terms, positive linear functionals, sequences, monotonic, monotonic functions, partial ordering, theory, negative, self-adjoint element, imaginary parts, complex, decompositions, numbers, real numbers, multiplication, addition, closed under, unit circle, real functions, frame, complex conjugation, functions, complex analysis, interpretations, useful, definitions, involutory rings, semi-simple, continuous, *-homomorphisms, normed algebras, implies, even, identity element, element, spectral radius, consequence, topological algebras, equality, involution, norm, algebras, defining property, noncommutative, knots, locally compact topological spaces, Lie group representations, Hilbert spaces, operators, Banach algebras, involutive
There are 43 references to this entry.

This is version 31 of $C^*$-algebra, born on 2002-08-23, modified 2009-01-29.
Object id is 3334, canonical name is CAlgebra.
Accessed 7161 times total.

Classification:
AMS MSC46L05 (Functional analysis :: Selfadjoint operator algebras :: General theory of $C^*$-algebras)
 46L87 (Functional analysis :: Selfadjoint operator algebras :: Noncommutative differential geometry)

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