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Type of associative algebra that "almost commutes" In mathematics, a supercommutative (associative) algebra is a superalgebra (i.e. a Z2-graded algebra) such that for any two homogeneous elements x, y we have y x = ( − 1 ) | x | | y | x y , {\displaystyle yx=(-1)^{|x||y|}xy,} where |x| denotes the grade of the element and is 0 or 1 (in Z2) according to whether the grade is even or odd, respectively. Equivalently, it is a superalgebra where the supercommutator [ x , y ] = x y − ( − 1 ) | x | | y | y x {\displaystyle [x,y]=xy-(-1)^{|x||y|}yx} always vanishes. Algebraic structures which supercommute in the above sense are sometimes referred to as skew-commutative associative algebras to emphasize the anti-commutation, or, to emphasize the grading, graded-commutative or, if the supercommutativity is understood, simply commutative. Any commutative algebra is a supercommutative algebra if given the trivial gradation (i.e. https://en.wikipedia.org/wiki/Skew-commutative_associative_algebra

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