چکیده (انگلیسی):

Only recently the study of human ‘Proairesis’ has become a respected area of scientific research. However, still today the very starting point of any such inquiry appears exceedingly difficult because the nature of human proairesis seems inherently refractory to explanation, especially in materialistic terms. Following the fundamental suggestions of Epictetus and Euler, the major contribution of this paper consists in the mathematical demonstration that it is possible to understand and treat the human ‘Proairesis’ (the famous ‘egg’ of the Montefeltro altarpiece by Piero della Francesca) as a material entity having the Arithmetic of a natural exponential function written in complex numbers and the Geometry of a square inscribed in a circumference (the famous ‘Homo Vitruvianus’ of Leonardo da Vinci).