† peninvariantn.

Origin: Formed within English, by derivation. Etymons: pene- prefix, invariant n.

Etymology: < pene- prefix + invariant n. Compare semi-invariant n. N.E.D. (1904) gives the pronunciation as (pīninvē^ə·riănt) /piːnɪnˈvɛərɪənt/.

Mathematics. Obsolete.

= semi-invariant n. 1.

ΘΚΠ

the world > relative properties > number > algebra > [noun] > expression > function > invariant > semi-invariant

peninvariant1860

semi-invariant1860

perpetuant1882

subinvariant1882

syzygant1882

1860 A. Cayley in Eng. Cycl. V. 541 The leading coefficient of a covariant..in any covariant of a binary quantic..has been termed a peninvariant, but a more appropriate term is seminvariant.

This entry has been updated (OED Third Edition, September 2005; most recently modified version published online June 2018).

单词	peninvariant
释义	† peninvariantn. Origin: Formed within English, by derivation. Etymons: pene- prefix, invariant n. Etymology: < pene- prefix + invariant n. Compare semi-invariant n. N.E.D. (1904) gives the pronunciation as (pīninvē^ə·riănt) /piːnɪnˈvɛərɪənt/. Mathematics. Obsolete. = semi-invariant n. 1. ΘΚΠ the world > relative properties > number > algebra > [noun] > expression > function > invariant > semi-invariant peninvariant1860 semi-invariant1860 perpetuant1882 subinvariant1882 syzygant1882 1860 A. Cayley in Eng. Cycl. V. 541 The leading coefficient of a covariant..in any covariant of a binary quantic..has been termed a peninvariant, but a more appropriate term is seminvariant. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online June 2018). < n.1860
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