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Anticommutative property information


In mathematics, anticommutativity is a specific property of some non-commutative mathematical operations. Swapping the position of two arguments of an antisymmetric operation yields a result which is the inverse of the result with unswapped arguments. The notion inverse refers to a group structure on the operation's codomain, possibly with another operation. Subtraction is an anticommutative operation because commuting the operands of ab gives ba = −(ab); for example, 2 − 10 = −(10 − 2) = −8. Another prominent example of an anticommutative operation is the Lie bracket.

In mathematical physics, where symmetry is of central importance, these operations are mostly called antisymmetric operations, and are extended in an associative setting to cover more than two arguments.

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Anticommutative property

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In mathematics, anticommutativity is a specific property of some non-commutative mathematical operations. Swapping the position of two arguments of an...

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Commutative property

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are complementary. Look up commutative property in Wiktionary, the free dictionary. Anticommutative property Centralizer and normalizer (also called...

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Signed area

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1-forms that make the density. Since the wedge product has the anticommutative property, d y ∧ d x = − d x ∧ d y {\displaystyle dy\wedge dx=-dx\wedge dy}...

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Alternating algebra

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nonzero homogeneous elements x and y (i.e. it is an anticommutative algebra) and has the further property that x2 = 0 for every homogeneous element x of odd...

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Supercommutative algebra

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component) always contains nilpotent elements. A Z-graded anticommutative algebra with the property that x2 = 0 for every element x of odd grade (irrespective...

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Graded ring

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(even) or 1 (odd). Some graded rings (or algebras) are endowed with an anticommutative structure. This notion requires a homomorphism of the monoid of the...

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Lie superalgebra

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{\displaystyle \mathbb {Z} } or N {\displaystyle \mathbb {N} } ) that is anticommutative and has a graded Jacobi identity also has a Z / 2 Z {\displaystyle...

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Jacobi identity

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commutator operation in a group. The following identity follows from anticommutativity and Jacobi identity and holds in arbitrary Lie algebra: [ x , [ y...

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Triple product

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the triple product. This follows from the circular-shift property and the anticommutativity of the cross product: a ⋅ ( b × c ) = − a ⋅ ( c × b ) = −...

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Algebra over a field

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subalgebra of an algebra over a field K is a linear subspace that has the property that the product of any two of its elements is again in the subspace. In...

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Exterior algebra

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V,} by the above construction. It follows that the product is also anticommutative on elements of V {\displaystyle V} , for supposing that x , y ∈ V {\displaystyle...

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Wightman axioms

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causal structure of the theory by imposing either commutativity or anticommutativity between spacelike separated fields. They also postulate the existence...

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Cross product

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zero length, then their cross product is zero. The cross product is anticommutative (that is, a × b = − b × a) and is distributive over addition, that...

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Gamma matrices

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gamma-matrix to be presented below generate the Clifford algebra. The defining property for the gamma matrices to generate a Clifford algebra is the anticommutation...

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Poisson bracket

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functions f , g , h {\displaystyle f,\,g,\,h} of phase space and time: Anticommutativity { f , g } = − { g , f } {\displaystyle \{f,g\}=-\{g,f\}} Bilinearity...

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Commutator

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{\displaystyle [A,[B,C]]+[B,[C,A]]+[C,[A,B]]=0} Relation (3) is called anticommutativity, while (4) is the Jacobi identity. [ A , B C ] = [ A , B ] C + B [...

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Subtraction

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second one. Subtraction follows several important patterns. It is anticommutative, meaning that changing the order changes the sign of the answer. It...

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Vector space

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{\displaystyle y} ): [ x , y ] = − [ y , x ] {\displaystyle [x,y]=-[y,x]} (anticommutativity), and [ x , [ y , z ] ] + [ y , [ z , x ] ] + [ z , [ x , y ] ] =...

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Differential form

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known as graded commutative), meaning that it satisfies a variant of anticommutativity that depends on the degrees of the forms: if α is a k-form and β is...

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Bivector

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{i\theta }.} The product of a vector with a bivector in two dimensions is anticommutative, so the following products all generate the same rotation v ′ = v exp...

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Lie algebra

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{\mathfrak {g}}} . Thus bilinearity and the alternating property together imply Anticommutativity, [ x , y ] = − [ y , x ] ,   {\displaystyle [x,y]=-[y...

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Mathematical descriptions of the electromagnetic field

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field coefficient functions and the constitutive coefficients are anticommutative for swapping of each one's indices. In particular, the Hodge star operator...

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Moment of inertia

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i ) × Δ r i ) + ( ω × Δ r i ) × − ( ω × Δ r i ) …  cross-product anticommutativity = Δ r i × ( ω × ( ω × Δ r i ) ) + ω × ( ( ω × Δ r i ) × Δ r i ) +...

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Geometric algebra

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the geometric algebra is still somewhat abstract, so we summarize the properties of the geometric product here. For multivectors A , B , C ∈ G ( p , q...

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Poisson ring

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In mathematics, a Poisson ring is a commutative ring on which an anticommutative and distributive binary operation [ ⋅ , ⋅ ] {\displaystyle [\cdot ,\cdot...

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