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逻辑图•形式化开发

逻辑解释•PNG

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逻辑解释•LaTeX

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\开始{数组}{ccccc}\mathrm{I_1}&:&\text{true}~\text{或}~\text{true}&=&\text{true}\\[4pt]\mathrm{I_2}&:&\text{not}~\ttext{true}}&:&(a~\text{或}~b)~\text}和}~(a~\t或}~c)&=&a~\text{或}~(b~\text}和}~c)\end{array}

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\begin{array}{ccccc}\mathrm{I_1}&:&&\text{false}~\text{and}~\text{false}&=&&\text{false}\\[4pt]\mathrm{I_2}&:&&\text{not}~\text{false}&=&&\text{true}\\[4pt]\mathrm{J_1}&:&a~\text{and}~\text{not}~a&=&&\text{false}\\[4pt]\mathrm{J_2}&:&(a~\text{and}~b)~\text{或}~(a \\ text{and}\c)&=&a~\text{和}~(b~\text}或}~c)\end{array}