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https://web.siia.unam.mx/siia-publico/c/busqueda_individual.php?id=76548

Julio César Guevara

Eminent Professor of Mathematics and Researcher at the School of Sciences of UNAM

"Leonardo [da Vinci] and Luca [Pacioli] seem to have enriched each other. Luca hadn’t delved into the questions of optics and [into] the questions that Leonardo was asking in these codices [Atlanticus, Madrid I and Madrid II] and Leonardo hadn’t delved as much into more theoretical geometry; so these manuscripts are reviewed as well as De Veribus and certain conclusions could be drawn where both were enriching each other."

Guevara Bravo is a mathematician and full-time academic in the Department of Mathematics of the School of Sciences of the National Autonomous University of Mexico (UNAM).

His areas of work are algebra and history of mathematics. He has published papers in journals and books on Goldbach’s conjecture, perfect numbers, Giordano Bruno, Nicolo Tartaglia, cryptography, prime numbers, Luca Pacioli, mathematics in painting, mathematics and music, among other topics. He is the author of Juegos matemáticos and "Leonardo, Luca Pacioli y el poder de los números". He is also co-editor of the Novo-Hispanic facsimile Sumario compendioso de las cuentas de plata y oro que en los reinos del Perú son necesarias a los mercaderes y a todo género de tratantes. Con algunas reglas tocantes a la aritmética, by Juan Diez Freile, published in 2008 by UNAM.

He has supervised more than 20 thesis in mathematics. He has taught courses in the School of Sciences for more than 32 years for the bachelor’s degrees in Mathematics, Physics and Actuarial Science. Likewise, he is a member of the Evaluation Committees of UNAM.

He is currently researching on the analysis of Edward Waring’s works, Leonhard Euler’s number theory, additive number theory, and the relationship between algebra and music, among others.