Math 2.0

Concept

Bicommutant

Summary

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 known as the double commutant or second commutant and is written S′′S^{\prime \prime}.

Further reading

  1. Wikipedia, page 455964, revision 1354564322, Bicommutant. adopted
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Aliasesdouble-commutant
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WritingW1 stated
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Changed4 November 2026

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