Surfer is a program to visualize real algebraic geometry in real-time. The surfaces visualized are given by the zero set of a polynomial equation in 3 variables. Surfer is based on the program Surf and has been developed for the exhibition IMAGINARY.
The polynomial can be entered in the command line in the bottom left hand corner in three variables x, y and z. If the formula is syntactically incorrect (i.e.the computer thinks the expression is not a polynomial) a red exclamation mark (!) appears on the right hand side of the command line.
The surface (the set of real zeros of the polynomial) is displayed immediately. Each surface is shown first in low resolution and then, after a short time for calculation, in high resolution.