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LUCAS PACIOLI

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(Paciuolo.)

Mathematician, born at Borgo San Sepolco, Tuscany, toward the middle of the
fifteenth century; died probably soon after 1509. Little is known concerning his
life. He became a Franciscan friar and was successively professor of mathematics
at Perugia, Rome, Naples, Pisa, and Venice. With Leonardo da Vinci, he was in
Milan at the court of Louis the Moor, until the invasion of the French. The last
years of his life were spent in Florence and Venice. His scientific writings,
though poor in style, were the basis for the works of the sixteenth-century
mathematicians, including Cardan and Tartaglia. In his first work, "Summa de
Arithmetica, Geometria, Proportioni, et Proportionalita", Venice, 1494, he drew
freely upon the writings of Leonardo da Pisa (Fibonacci) on the theory of
numbers. Indeed he has thus preserved fragments of some of the lost works of
that mathematician. The application of algebra to geometry, and the treatment,
for the theory of probability also help to make this treatise noteworthy. The
"Divina Proportioni" (Venice, 1509), was written with some co-operation on the
part of Leonardo da Vinci. It is of interest chiefly for some theorems on the
inscription of polyhedrons in polyhedrons and for the use of letters to indicate
numerical quantities. His edition of Euclid was published in 1509 in Venice.

ABOUT THIS PAGE

APA citation. Linehan, P. (1911). Lucas Pacioli. In The Catholic Encyclopedia.
New York: Robert Appleton Company. http://www.newadvent.org/cathen/11383b.htm

MLA citation. Linehan, Paul. "Lucas Pacioli." The Catholic Encyclopedia. Vol.
11. New York: Robert Appleton Company, 1911.
<http://www.newadvent.org/cathen/11383b.htm>.

Transcription. This article was transcribed for New Advent by Christine J.
Murray.

Ecclesiastical approbation. Nihil Obstat. February 1, 1911. Remy Lafort, S.T.D.,
Censor. Imprimatur. +John Cardinal Farley, Archbishop of New York.

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