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The dual of the small stellated truncated dodecahedron U_(58) and Wenninger dual W_(97).

800 The dual of the great rhombidodecahedron U_(73) and Wenninger dual W_(109).

The dual of the great rhombihexahedron U_(21) and Wenninger dual W_(103).

The dual of the great truncated icosahedron U_(55) and Wenninger dual W_(95).

The dual of the great stellated truncated dodecahedron U_(66) and Wenninger dual W_(104).

The dual of the stellated truncated hexahedron U_(19) and Wenninger dual W_(92)

The dual polyhedron of the cubohemioctahedron U_(15) and Wenninger dual W_(78). When rendered, the octahemioctacron and hexahemioctacron appear the same.

The branch of algebraic topology which deals with homotopy groups. Homotopy methods can be used to solve systems of polynomials by embedding the polynomials in a family of ...

The keratoid cusp is quintic algebraic curve defined by y^2=x^2y+x^5. (1) It has a ramphoid cusp at the origin, horizontal tangents at (0,0) and (-6/(25),(108)/(3125)), and a ...

The knot curve is a quartic curve with implicit Cartesian equation (x^2-1)^2=y^2(3+2y). (1) The x- and y-intercepts are (0,-1), (0,1/2), and (+/-1,0). It has horizontal ...