In  Adam Bednorz & Witold Bednorz state that sphere eversions have been described so far by either pictures with minimal topological complexity, numerical evolution or complex equations. They give relatively simple explicit formulas for the whole eversion, both analytic and topologically simpler, including also Boy surface (real projective plane), using a family of ruled surfaces. They also show their usefulness in visualizing the process using commonly available modeling software.
Here the result of an implementation in the SideFX software Houdini is shown.
Marcel Padilla +
University: TU Berlin, Institut für Mathematik, MA 823
Address: Straße des 17. Juni 136, 10623 Berlin, GERMANY
Tel: +49 30 31429278