| 单词 | principle of bivalence |
| 释义 | > as lemmasprinciple of bivalence In various subjects: the quality of being bivalent; bivalency; spec. in Logic, principle of bivalence (see quots.). ΘΚΠ the world > matter > chemistry > valency > [noun] > valency of two bivalence1889 the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > chromosomes in respect of meiosis trivalency1888 zygosome1905 bivalence1909 zygonema1911 trivalent1922 quadrivalent1923 quinquevalent1926 multivalent1929 nullisomic1932 bivalent1937 nullisome1944 the mind > mental capacity > philosophy > logic > logical truth > [noun] > truth value > terms relating to matrix1914 truth table1920 principle of bivalence1951 constative1955 1889 Cent. Dict. Bivalence (Chem.), a valence or saturating power which is double that of the hydrogen atom. 1909 Cent. Dict. Suppl. Bivalence of the chromosomes, the double as distinguished from the single (univalent) condition of the chromosomes, for example, in the oöcytes and spermatocytes of one of the forms of Ascaris megalocephala. 1951 J. Łukasiewicz Aristotle's Syllogistic iv. 82 The so-called principle of bivalence, which states that every proposition is either true or false, i.e. that it has one and only one of two possible truth-values: truth and falsity. 1962 W. Kneale & M. Kneale Devel. Logic ii. 47 The principle that every statement is true or false is called the Principle of Bivalence. < as lemmas |
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