单词 |
alethic |
释义 |
alethic, a. Logic.|əˈliːθɪk| [f. Gr. ἀλήθ-εια truth + -ic.] Designating modalities of truth, e.g. the possibility or impossibility of something being true.
1951G. H. von Wright Essay in Modal Logic i. 1 Alethic modes or modes of truth...can conveniently be divided into two sub-kinds. Sometimes we consider the modes in which a proposition is (or is not) true... Sometimes we consider the modes in which a property is present (or absent) in a thing. 1982R. Quirk Style & Communication in Eng. Lang. iii. 50 A fourth modality, alethic.., can be disregarded in ordinary linguistic communication, concerned as it is with purely logical necessity (‘Since he is unmarried, he must be a bachelor’). 1987L. W. Sumner Moral Found. Rights ii. 22 The analogy between the two kinds of constraints serves to remind us that deontic categories (required/forbidden) are counterparts, or perhaps special cases, of alethic modal categories (necessary/impossible). |

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