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单词 quartinvariant
释义

quartinvariantn.

Brit. /ˌkwɔːtɪnˈvɛːrɪənt/, U.S. /ˌkwɔrdɪnˈvɛriənt/, /ˌkwɔrdᵻnˈvɛriənt/
Origin: Formed within English, by compounding. Etymons: quartic n., invariant n.
Etymology: < quart- (in quartic n.) + invariant n. Compare sextinvariant n.
Mathematics.
An invariant of the fourth degree.
ΚΠ
1856 Philos. Trans. (Royal Soc.) 146 632 The sextinvariant may be thus represented by means of a determinant of the sixth order and of the quadrinvariant and quartinvariant.
1889 Amer. Jrnl. Math. 12 28 The value of the quartinvariant S.
1939 Duke Math. Jrnl. 5 560 It is of interest to calculate the quartinvariant S and the sextinvariant T for the cubic X(x) = 0.
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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