| 单词 | logical multiplication |
| 释义 | > as lemmaslogical multiplication logical multiplication n. the formation of a logical product. ΘΚΠ the mind > mental capacity > philosophy > logic > predicate or propositional logic > [noun] > set theory or extension > conjunction or disjunction of sets logical addition1868 logical multiplication1868 logical product1868 logical sum1868 sum1870 1868 C. S. Peirce in Proc. Amer. Acad. Arts & Sci. 1865–8 7 251 Let a, b denote the individuals contained at once under the classes a and b... If a and b were independent events, a, b would denote the event whose probability is the product of the probabilities of each. On the strength of this analogy..the operation indicated by the comma may be called logical multiplication. 1903 B. Russell Princ. Math. ii. 18 From this point we can prove the laws of contradiction and excluded middle and double negation, and establish all the formal properties of logical multiplication and addition—the associative, commutative and distributive laws. 1970 O. Dopping Computers & Data Processing i. 23 In Boolean algebra..instead of the usual mathematical operations, there are certain logical operations; the most common ones of these are logical addition, logical multiplication, and negation. < as lemmas |
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