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A parameter n used to specify an elliptic integral of the third kind Pi(n;phi,k).

delta(r)=sqrt(r)-2alpha(r), where alpha(r) is the elliptic alpha function.

A point p on a regular surface M in R^3 is said to be elliptic if the Gaussian curvature K(p)>0 or equivalently, the principal curvatures kappa_1 and kappa_2 have the same ...

A catastrophe which can occur for three control factors and two behavior axes. The elliptical umbilic is catastrophe of codimension 3 that has the equation ...

A n-gonal cupola adjoined to a 2n-gonal prism.

Johnson solid J_(16).

A pentagonal rotunda adjoined to a decagonal prism which is Johnson solid J_(21).

An n-gonal pyramid adjoined to an n-gonal prism.

Johnson solid J_(19).

Johnson solid J_(14).