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Stuttering equivalence : ウィキペディア英語版
Stuttering equivalence

In theoretical computer science, stuttering equivalence, a relation written as
:\pi\sim_\pi',
can be seen as a partitioning of path \pi and \pi' into blocks, so that states in the k^} block of the other path. Corresponding blocks may have different lengths.
Formally, this can be expressed as two infinite paths \pi=s_0, s_1, \ldots and \pi'=r_0, r_1, \ldots which are stuttering equivalent (\pi \sim_ \pi') if there are two infinite sequences of integers 0 = i_0 < i_1 < i_2 < \ldots and 0 = j_0 < j_1 < j_2 < \ldots such that for every block k \geq 0 holds L(s_) = L(s_) = \ldots = L(s_) = L(r_) = L(r_) = \ldots = L(r_).
Stuttering equivalence is not the same as bisimulation, since bisimulation cannot capture the semantics of the 'eventually' (or 'finally') operator found in linear temporal/computation tree logic(branching time logic)(modal logic). So-called ''branching bisimulation'' has to be used.
==References==



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「Stuttering equivalence」の詳細全文を読む



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