Discrete mathematics, discrete physics and numerical methods

摘要: Discrete mathematics has been neglected for a long time. It put in the shade by striking success of continuous last two centuries, mainly because models physics proved very reliable, but also greater difficulty dealing with it. This perspective rapidly changing years owing to needs numerical analysis and, more recently, so called discrete physics. In this paper, starting from some sentences Fichera about and world, we shall present considerations phenomena which arise when designing methods or classical physical problems.