General deduction and strong completeness of the formal deductive system L? are further studied.

进一步讨论了形式系统L? 中的一般演绎推理及强完备性问题.

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The corresponding version in fuzzy logic of the natural deductive system of classical logic is discussed.

讨论了经典逻辑的自然演绎系统在模糊逻辑中的对应形式.

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