Symmetroid
A Quartic Surface which is the locus of zeros of the Determinant of a Symmetric
matrix of linear forms. A general symmetroid has 10 Ordinary Double Points(Jessop 1916, Hunt 1996).
References
Hunt, B. ``Algebraic Surfaces.'' http://www.mathematik.uni-kl.de/~wwwagag/Galerie.html. Hunt, B. ``Symmetroids and Weddle Surfaces.'' §B.5.3 in The Geometry of Some Special Arithmetic Quotients. New York: Springer-Verlag, pp. 315-319, 1996. Jessop, C. Quartic Surfaces with Singular Points. Cambridge, England: Cambridge University Press, p. 166, 1916.
- Triangle Transformation Principle
- Triangular Cupola
- Triangular Dipyramid
- Triangular Graph
- Triangular Hebesphenorotunda
- Triangular Matrix
- Triangular Number
- Triangular Orthobicupola
- Triangular Pyramid
- Triangular Square Number
- Triangular Symmetry Group
- Triangulation
- Triaugmented Dodecahedron
- Triaugmented Hexagonal Prism
- Triaugmented Triangular Prism
- Triaugmented Truncated Dodecahedron
- Triaxial Ellipsoid
- Tribar
- Tribonacci Number
- Tribox
- Trichotomy Law
- Tricolorable
- Tricomi Function
- Tricuspoid
- Tricylinder