Giordano is most noted nowadays for a theorem on Saccheri quadrilaterals that he proved in his 1668 book Euclide restituo (named after Borelli's Euclides Restitutus of 1658).
Umberto Giordano | Luca Giordano | Giordano Bruno | Dick Giordano | Giordano | Lito Vitale | Franco Giordano | Lou Giordano | Jorge Giordano | Basilica of San Vitale | Vito Vitale | Vince Giordano | ''spazio vitale'' | San Vitale, Rome | Salvatore Vitale | Mario Giordano | ''Maria Anna of Neuburg on horseback'' by Luca Giordano | Leonardo Vitale | Leafa Vitale | Giordano's | Giordano Riccati | Giordano Pierleoni | Giordano Orsini | Giordano Filangieri II | Giordano Berti | Giordano Benedetti | Basilio Giordano |