Luca Valerio
Luca Valerio Valeri, (* 1553 in Naples, † January 17, 1618 in Rome) was an Italian mathematician.
Life
Valerio's father was from Ferrara, his mother from Greece and he grew up in relatives on Corfu, where his mother's family belonged to the nobility. He studied at the Collegio Romano in Rome, where he has not only studied theology and philosophy ( and a doctorate ), but also of Christopher Clavius taught in mathematics. He then taught in Rome, among others, rhetoric, and Greek at the Collegio Greco at the University of Rome (La Sapienza ). From 1600 he taught mainly mathematics and worked part-time as a Greek lecturer in the Vatican library and taught privately. One of his students was the future Pope Clement VIII ( Ippolito Aldobrandini, Cardinal from 1585 ).
In his book De Centro Gravitatis from 1603 he followed up on the studies of Archimedes on the determination of volumes and centers of gravity of bodies on (especially bodies of revolution ) and came in to the new results, which were the admiration of Galileo Galilei, who made friends with Valerio and with whom he corresponded from 1609 to 1616 ( he had known him in 1590 from Pisa). In this context, he also dealt with the exhaustion and provided input on control parameters of fractures (similar Bonaventura Cavalieri later attributed ). He continued to post in his book on the quadrature of the parabola, in which he determined on the basis of gravity and area of parabola segments from the known case of the half circular disk.
1612 he was admitted to the Accademia dei Lincei at the suggestion of Galileo. There he was responsible for the publication of scientific papers ( as Galileo's Letters on Sunspots of 1613 ) responsible and the Articles of Association ( Lynceographum ).
After the condemnation of the Copernican doctrine, by Cardinal Bellarmine in 1616 he withdrew from the academy and finished his correspondence with Galileo. Since he also allied with the enemies of Galileo came there in 1616 to exclude Valerio of the meetings of the Academy and its isolation among Italian scientists. His departure request was rejected and the founder of the Academy Federico Cesi still hoped to Valerio's death to a change of heart.
His mathematical work had an influence on Evangelista Torricelli, Jean -Charles de la Faille, Cavalieri, Guldin, Grégoire de Saint -Vincent and André Tacquet. Valerio was in turn influenced by Franciscus Maurolicus and Federico Commandino.
He had a relationship with one of his pupils, Margherita Sarrocchi, the poet was and beyond a very effervescent personality. Their influence on Valerio, the complete opposite in character and was reserved by nature, but his girlfriend fully surrendered, was cited as one reason for its withdrawal from the Academy. He also had to be very close ties to the Vatican and feared in the impending inquisition process involved against Galileo.
Galileo was not upset lasting from Valerio's turnaround - in his Discorsi of 1638 he called Valerio the greatest geometer Archimedes and his time.