Non-standard analysis, introduced by Abraham Robinson, rehabilitated the infinitesimal approach to calculus, which had fallen into disrepute in favour of the theory of limits, by extending the field of real numbers to the Hyperreal numbers which include infinitesimal and infinite quantities.
A análise non estándar, presentada por Abraham Robinson, rehabillitou o cálculo infinitesimal, que decaera en favor da teoría de límites, estendendo o campo de números reais aos números hiperreais.