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单词 contravariant
释义

contravariantn.

/kɒntrəˈvɛːrɪənt/
Etymology: contra- prefix 3.
Mathematics.
See quot. 1853.
ΚΠ
1853 Sylvester in Philos. Trans. (Royal Soc.) 143 i. 543 Contravariant, a function which stands in the same relation to the primitive function from which it is derived as any of its linear transforms to an inversely derived transform of its primitive.
1885 G. Salmon Lessons Mod. Higher Algebra (ed. 4) 121 Besides covariants and contravariants there are also functions involving both sets of variables, which differ, etc.
This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2019).
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