la manera de saber cuándo alguien miente. Paenza es un divulgador matemático extraordinario y nos regala esta entretenida compilación de diez de los más extraordinarios problemas irresueltos de la historia. ENGLISH DESCRIPTION "The most attractive side of math through ten absolutely fascinating problems. Although it doesn't seem like it to us, math is everywhere and within reach of whoever want wants to find it. We rely upon it without realizing when we take a selfie, each time we buy an airline ticket and even cooking a tortilla. In A Mathematician, Please! Doctor Adrian Paenza invites us to discover math like never before, sometimes hidden in the most unsuspecting places of everyday life. These pages interweave love and technology, they explain a game of cards between Messi and Ronaldo, and even reveal a way to tell when someone is lying. Paenza is an extraordinary math informer and he gifts us this entertaining compilation of ten of the most extraordinary unsolved problems in history.