Zerologia. Sullo zero, il vuoto e il nulla

three former schoolmates reunite and explore the mathematical concept of zero, the physical one of the void and the philosophical one of nothing, thus re-iterating an adventure that has accompanied the entire history of thought. What do these three concepts have in common? Surely an embarrassing paradox: a number representing “non-existence”, an indispensable but basically impenetrable notion; a vacuum that “fills” our daily lives and remains a cutting-edge idea in modern physics; an absence, a deficiency, a sparkling and thought-provoking negation that draws us to the brink of reality. That oval-shaped symbol may seem sterile, but it can be a source of endless amusement.