Claudius Francis Milliet, an excellent mathematician, mechanic, and astronomer, descended from a noble family, and born at Chambery in 1611. His principal performances are an edition of Euclid's elements of geometry, in which the unserviceable propositions are rejected, and the uses of those retained annexed; a discourse on fortification; and another on navigation. These with others have been collected first in 3 vols folio, and afterwards in 4, under the title of Mundus Mathematicus: being indeed a complete course of mathematics. He died in 1678, professor of mathematics in the university of Turin.

DECiates, or Deciatii, in Ancient Geography, a people of Gallia Narbonensis, next the borders of Italy, on the Mediterranean. Now the diocese of Grasse and Antibes. Deciatum oppidum, was a town situated between Antibes and Nice.