Vicenzo Riccati

Vicenzo Riccati


Born: 11 Jan 1707 in Castelfranco Veneto (near Treviso), Italy
Died: 17 Jan 1775 in Treviso, Italy

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Vicenzo Riccati was the second son of Jocopo Riccati and his early education was at home and from the Jesuits. He entered the Jesuit order in 1726 going to the Jesuit Colege in Piacenza in 1728 to teach literature. In 1729 he moved to Padua, then to Parma in 1734, studied theology in Rome for a while, then returned to Bologna in 1739 where he taught mathematics in the College of San Francesco Saverio for 30 years.

Vicenzo continued his father's work on integration and differential equations. He was skilled in hydraulic engineering and carried out flood control projects which saved the Venetian and Bolognian region from flooding.

Vicenzo studied hyperbolic functions and used them to obtain solutions of cubics. He found the standard addition formulas for hyperbolic functions, their derivatives and their relation to the exponential function. Lambert is often cited as the first to introduce the hyperbolic fuctions but he did not do so until 1770 while Vicenzo Riccati's work (some joint with Saladini) was published between 1757 and 1767.

Vicenzo Riccati and Saladini worked on the 'rose curves' introduced by Grandi. They also worked on al'Haitam's problem:-

Given points A and B find the point C on a circular mirror so that a ray of light from A is reflected at C to B.

Al'Haitam had a less than satisfactory solution, Huygens found a good solution which Vicenzo Riccati and Saladini simplified and improved.

References elsewhere in this archive:

He worked on Rhodenea curves

References:

  1. Dictionary of Scientific Biography
  2. G Loria, Storia delle matematiche (Milan, 1950), 663, 681, 706, 725.

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JOC/EFR February 1996