The Ptolemaic System, constructed by Claudius Ptolemeus (the Latin form of his name), was the most influential of all Earth centered cosmological systems. His ingenious and creative work is primarily recorded in his book The Mathematical Systematic Treatise which the Arabs characterized as “the greatest” and, in so doing, gave the book its most used name, Almagest.
Cramer, John Dr.
"The Ptolemaic System: A Detailed Synopsis,"
Oglethorpe Journal of Undergraduate Research: Vol. 5
, Article 3.
Available at: https://digitalcommons.kennesaw.edu/ojur/vol5/iss1/3