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Zinbiel algebra
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Zinbiel algebra : ウィキペディア英語版
Zinbiel algebra
In mathematics, a Zinbiel algebra or dual Leibniz algebra is a module over a commutative ring with a bilinear product satisfying the defining identity:
: ( a \circ b ) \circ c = a \circ (b \circ c) + a \circ (c \circ b) .
Zinbiel algebras were introduced by . The name was proposed by J.-M. Lemaire as being "opposite" to Leibniz algebra.
The symmetrised product
: a \star b = a \circ b + b \circ a
is associative.
A Zinbiel algebra is the Koszul dual concept to a Leibniz algebra. The free Zinbiel algebra over ''V'' is the tensor algebra with product
: (x_0 \otimes \cdots \otimes x_p) \circ (x_ \otimes \cdots \otimes x_) =
x_0 \sum_ (x_1,\ldots,x_) ,
where the sum is over all (''p'',''q'') shuffles.〔
==References==

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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Zinbiel algebra」の詳細全文を読む



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