Andrea Guidi (Florence 1958) member, sales and marketing manager of Software Produts Italia www.softpi.com. Researcher in computer science and mathematics graduate of the University of Pisa, he taught at the University of Ecuador in South America. Among his publications in Italian for McGraw-Hill Italy: "Linguaggio C" 2013 fifth edition with Alessandro Bellini, "Guida a SQL" (SQL guide) 2004 second edition with Daniela Dorbolo, "Conoscere Unix" (Knowing Unix) 1991; for Apogeo-Feltrinelli "Ajax per applicazioni Web" (Ajax Web applications) 2007 with Andrea Romagnoli and Pasquale Salerno; for ETAS-RCS Education Division Tecnologia dell'informazione e e della comunicazione (Information and Communication Technology) 2001 with Nazario Renzoni.
For La Lepre Edizioni published the historical-mathematical thriller "La diagonale di Pitagora" ("Pythagoras diagonal), www.isegretidipitagora.com, the first two novels contained in "I segreti di Pitagora" (The Secrets of Pythagoras) 2011.
Self-publishing: "La diagonale di Cantor" (Cantor's diagonal) 2014, the second novel of the thriller-trilogy of infinity in mathematics (Pythagoras, Cantor, Gödel) and "Il ladro che rubò lo Zero" (The thief who stole the Zero) 2011, illustrator: Stefania Gaggini.
He is the author of several plays in Italian, including: "Il ladro che rubò lo Zero" (Thief who stole the Zero) 2009, "Chi ha ucciso il Sig. G" (Who Killed Mr. G? Semi-serious story of Giuseppe Garibaldi) 2011, "I viaggi di Googol" (Googol trips), 2013, and, based on the homonymous novel, "La diagonale di Pitagora" (The diagonal of Pythagoras) 2010.