翻訳と辞書
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・ Lie a Little Better
・ Lie About Us
・ Lie algebra
・ Lie algebra bundle
・ Lie algebra cohomology
・ Lie algebra extension
・ Lie algebra representation
・ Lie algebra-valued differential form
・ Lie algebroid
・ Lie Back and Enjoy It
・ Lie Back and Think of England
・ Lie bialgebra
・ Lie bialgebroid
・ Lie bracket of vector fields
・ Lie Cliff
Lie coalgebra
・ Lie conformal algebra
・ Lie derivative
・ Lie detection
・ Lie Detector (disambiguation)
・ Lie Detector (TV series)
・ Lie Detectors
・ Lie Die
・ Lie Down in Darkness
・ Lie Down in Darkness (Moby song)
・ Lie Down in Darkness (novel)
・ Lie Down in the Light
・ Lie Down with Lions
・ Lie group
・ Lie group action


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Lie coalgebra : ウィキペディア英語版
Lie coalgebra
In mathematics a Lie coalgebra is the dual structure to a Lie algebra.
In finite dimensions, these are dual objects: the dual vector space to a Lie algebra naturally has the structure of a Lie coalgebra, and conversely.
==Definition==
Let ''E'' be a vector space over a field ''k'' equipped with a linear mapping d\colon E \to E \wedge E from ''E'' to the exterior product of ''E'' with itself. It is possible to extend ''d'' uniquely to a graded derivation (this means that, for any ''a'', ''b'' ∈ ''E'' which are homogeneous elements, d(a \wedge b) = (da)\wedge b + (-1)^ a \wedge(db)) of degree 1 on the exterior algebra of ''E'':
:d\colon \bigwedge^\bullet E\rightarrow \bigwedge^ E.
Then the pair (''E'', ''d'') is said to be a Lie coalgebra if ''d''2 = 0,
i.e., if the graded components of the exterior algebra with derivation (\bigwedge^
* E, d)
form a cochain complex:
:E\ \rightarrow^\ E\wedge E\ \rightarrow^\ \bigwedge^3 E\rightarrow^\ \dots

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「Lie coalgebra」の詳細全文を読む



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