trigraphyn.
/ˈtrɪɡrəfi/ Geometry.
A group of three sets of points or lines having a relation analogous to that of homography between two (see homography n. 1); that branch of geometry which deals with such relations.
ΘΚΠ
the world > relative properties > number > geometry > point > [noun] > sets or groups of points
umbilic point1586
involution1847
triad1850
range1859
point group1887
tetrad1889
tristigm1889
neighbourhood1891
trinode1891
trigraphy1895
Cantor set1902
web1909
limit cycle1918
Leech lattice1968
1895 J. W. Russell in Proc. London Math. Soc. 26 446 (title) Applications of Trigraphy... Trigraphic ranges... A trigraphy projects into a homographic trigraphy.
Derivatives
trigraphic adj. /traɪˈɡræfɪk/ pertaining to trigraphy.
/traɪˈɡræfɪk/ pertaining to trigraphy.ΘΚΠ
the world > relative properties > number > geometry > shape or figure > [adjective] > relationship between > equal or similar
like1557
isoperimetral1625
similar1692
isoperimetrical1706
identical1806
homologous1863
homological1885
perspective1885
homothetic1886
trigraphic1895
1895 J. W. Russell in Proc. London Math. Soc. 26 448 Given the trigraphic relation, to construct the vague points.
1895 J. W. Russell in Proc. London Math. Soc. 26 450 Trigraphic Pencils.
1895 J. W. Russell in Proc. London Math. Soc. 26 452 Trigraphic Properties of a Quadric Surface.
This entry has not yet been fully updated (first published 1914; most recently modified version published online December 2018).
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n.1895