Singular

D.9.3.2 surfer

Usage:

surfer(f); f poly

Assume:

f defines a surface given by one equation

Return:

nothing

Note:

requires the external program `surfer` to be installed, to close the graphical interface just close the window of surfer

LIB "surf.lib";
ring rr1 = 0,(x,y,z),dp;
// Steiner surface
ideal J(2) = x^2*y^2+x^2*z^2+y^2*z^2-17*x*y*z;
surfer(J(2));
// --------------------
surfer(x*(x2-y2)+z2);
// E7
surfer(x^3-x*y^3+z^2);
// Whitney umbrella
surfer(z^2-x^2*y);