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Triple product property : ウィキペディア英語版
Triple product property
In abstract algebra, the triple product property is an identity satisfied in some groups.
Let G be a non-trivial group. Three nonempty subsets S, T, U \subset G are said to have the ''triple product property'' in G if for all elements s, s' \in S, t, t' \in T, u, u' \in U it is the case that
:
s's^t't^u'u^ = 1 \Rightarrow s' = s, t' = t, u' = u

where 1 is the identity of G.
It plays a role in research of fast matrix multiplication algorithms.
==References==

* Henry Cohn, Chris Umans. A Group-theoretic Approach to Fast Matrix Multiplication. . ''Proceedings of the 44th Annual IEEE Symposium on Foundations of Computer Science'', 11–14 October 2003, Cambridge, MA, IEEE Computer Society, pp. 438–449.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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