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A proposition and its denial cannot both be true at the same time and "in the same respect." In other words: for any proposition P, it is not the case both that [P] is true and that [not-P] is true. |
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For any proposition P, either [P] is true or [P] is false; there are no propositions that are neither true nor false. |
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This is closely related though distinct from TheLawOfNoncontradiction and TheLawOfExcludedMiddle. |
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This is closely related to though distinct from TheLawOfExcludedMiddle. See also TheLawOfNoncontradiction. |
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