对于极小不可满足公式的子类MAX和MARG，我们证明了：其变元改名和文字改名的复杂性等价于图同构问题GI。

For the subclasses MAX and MARG of minimal unsatisfiable formulas, we show that the variable and literal renaming problems are equivalent to the graph isomorphism problem GI.

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本文提出的基于等价类法的形式背景同构判定算法，有效地提高了同构判定的效率。

This paper suggests an isomorphism detecting algorithm based on equivalent class, which improves the efficiency of context isomorphism detection.

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若两状态转换图同构，则两图中的状态均可一一配对为待验证状态对，即所有的代验证状态对均为等价状态对。

If the state transfer graphs are isomorphism, all the states in different graphs can be matched as equal state pairs.

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若两状态转换图同构，则两图中的状态均可一一配对为待验证状态对，即所有的代验证状态对均为等价状态对。

If the state transfer graphs are isomorphism, all the states in different graphs can be matched as equal state pairs.

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