Index Entry
Calculus:
“The calculus assumes that a plane is infinitesimally congruent with the surface of a sphere at the point of the plane’s tangency of the sphere. The calculus and the spherical trigonometry therefore also assumes that the sums of the angles around any point of any sphere are always 360°.” But “the sums of the angles around all the vertices of a sphere will always be 720° or one tetrahedron less than the sum of the vertices times 360°, ergo, one basic assumption of the calculus is invalid.”
