Kummer's Quartic Surface |
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Common terms and phrases
arbitrary point belong changing the signs circumsphere collinear combining the members compound symbol condition of incidence configuration constructed from six contains the points corners cyclical order deduced denote the operation desmic system edges elements five planes form a group group of reflexions group of sixteen Hence homogeneous coordinates identical operation incidence diagram interchanges inverse matrix isolated k₁ k₂ lineal position linear linearly constructed multiplication table operation of changing orthogonal matrix Pascal's theorem pentagons permutable groups plane at infinity point and plane points and sixteen projective quadric cone quartic surface quaternion rest arranged row and column second diagram singular conic six nodes six planes six points six tropes sixteen nodes sixteen operations sixteen planes sphere subgroups symbolic equation AČ tangent lines tetrahedral piece three tetrahedra triangles twelve different twelve pentagons twisted cubic U₁ V₁ XYZT دو دو دو