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The logic of classical language/fr (view source)

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#Un ensemble de phrases <math>\Im</math>, et un nombre <math>n\geq1</math> d'autres phrases ou déclarations <math>(\delta_1,\delta_2,.....\delta_n \ )</math> sont logiquement compatibles si, et seulement si, l'union entre eux <math>\Im\cup\{\delta_1,\delta_2.....\delta_n\}</math> est cohérente..

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#Un ensemble de phrases <math>\Im</math>, et ~~a number~~ <math>n\geq1</math> of other phrases or statements <math>(\delta_1,\delta_2,.....\delta_n \ )</math> are logically incompatible if, and only if, the union between them <math>\Im\cup\{\delta_1,\delta_2.....\delta_n\}</math> is incoherent.

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#Un ensemble de phrases <math>\Im</math>, et un nombre <math>n\geq1</math> of other phrases or statements <math>(\delta_1,\delta_2,.....\delta_n \ )</math> are logically incompatible if, and only if, the union between them <math>\Im\cup\{\delta_1,\delta_2.....\delta_n\}</math> is incoherent.

Let us try to follow this reasoning with practical examples:

Luca

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