In algebra, the bicommutant of a subset S of a semigroup (such as an algebra or a group) is the commutant of the commutant of that subset. It is also...

von Neumann bicommutant theorem relates the closure of a set of bounded operators on a Hilbert space in certain topologies to the bicommutant of that set...

sequence the bicommutant aspect is implicit in the use of Ext functors, the derived functors of Hom-functors; if there is a bicommutant aspect, taken...

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S ′′′′′ {\displaystyle S'=S'''=S'''''} ; i.e. a commutant is its own bicommutant. Source: The centralizer and normalizer of S are both subgroups of G...

von Neumann algebra von Neumann double commutant theorem Commutant, bicommutant Topological ring Noncommutative geometry Disk algebra Colombeau algebra...

non-degenerate representations π of A the von Neumann algebra π(A)″ (that is, the bicommutant of π(A)) is a type I von Neumann algebra. In fact it is sufficient to...

Neumann bicommutant theorem shows that the analytic definition is equivalent to a purely algebraic definition as being equal to the bicommutant. After...

(measure theory) Viviani's theorem (Euclidean geometry) Von Neumann bicommutant theorem (functional analysis) Von Neumann's theorem (operator theory)...

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where D is a division ring. This result is related to the Von Neumann bicommutant theorem, which states that, for a *-algebra A of operators on a Hilbert...

conclusion still refers to all central simple subrings of R. The Von Neumann bicommutant theorem states that a *-subalgebra A of the algebra of bounded operators...