"law of noncontradiction" meaning in English

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          "sense": "principle in logic",
          "word": "law of excluded middle"
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          "text": "The statement \"this piece of chalk is not a piece of chalk\" violates the law of noncontradiction.",
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        "The principle that no statement may be simultaneously true and false at the same time and in the same sense."
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        "(logic) The principle that no statement may be simultaneously true and false at the same time and in the same sense."
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          "word": "law of contradiction"
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        "The principle that no statement may be simultaneously true and false at the same time and in the same sense."
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        "(logic) The principle that no statement may be simultaneously true and false at the same time and in the same sense."
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