syzygantn.
/ˈsɪzɪɡənt/ Mathematics.
(See quots.)
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peninvariant1860
semi-invariant1860
perpetuant1882
subinvariant1882
syzygant1882
1882 J. J. Sylvester in Amer. Jrnl. Math. 5 87 Irreducible syzygants and irreducible invariantive derivatives of the same type, to the same quantic cannot coëxist.
1882 Hammond in Amer. Jrnl. Math. 5 221.
1885 A. Cayley Coll. Math. Papers XII. 251 A seminvariant may be expressible as a sum of products (of a higher degree) of perpetuants of lower degrees, and of perpetuants of lower degrees, and it is not on this account reducible: a seminvariant so expressible is said to be a ‘syzygant’.
This entry has not yet been fully updated (first published 1919; most recently modified version published online June 2018).
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n.1882