On Sphero-Cyclides
On Sphero-Cyclides
1.These spherical quartics are the lines of intersection of spheres both with cyclides and qnadrics.M. Laguerre, who first pointed out their genesis (infra, §4), designated them Anallagmatio Spherical Curves, because they are unaltered, when inverted from any of its four poles of inversion.(Ghasles, " Rapport sur les progrds de la …