commutative_closure (359B)
1 # Commutative closure 2 3 The *commutative closure* of a [formal_language] L is the set of all [words] that admit a [permutation] in L 4 5 [commutative_closure_does_not_preserve_regularity]: If L is a [regular_language], then the commutative closure is not necessarily a [regular_language] 6 7 Up: [formal_language_closure_operation] 8 9 See also: [language_commutative]