This paper describes the eccentricity, amplitude, phase shift, angular momentum, polarization, radial path, and orbital ...

An ancient Skiri Pawnee star map on elk skin reopens the debate about its true function and challenges Western ...

Professor Raúl Rojas has published a book about how symbols have been used throughout history in mathematics. The work was translated into English this year.

This file provides functions and modules that construct shapes from a list of cross sections. In the case of skin() you specify each cross sectional shape yourself, and the number of points can vary.