projectivityn.
/ˌprɒdʒɛkˈtɪvᵻti/, U.S. /ˌprɑdʒɛkˈtɪvᵻdi/, /ˌproʊˌdʒɛkˈtɪvᵻdi/ Mathematics.
Projective quality; power or capacity for geometrical projection.
ΚΠ
1891 Amer. Jrnl. Math. 14 40 Perspectivity appears as a special case of projectivity.
1900 Nature 12 July 260/1 He then takes up the subject of chains of points, showing their application to the general theory of projectivity.
1972 Jrnl. London Math. Soc. 5 423 (title) Relative projectivity and injectivity classes determined by simple modules.
2004 Jrnl. Math. Physics 45 418 In quantum theory of measurement and its applications..one needs to consider a more general setting in which projectivity is dropped.
This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).
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n.1891- cluster-fisted
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- clustered pillar column
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- clustering
- clusteringly