Purbach

Regiomontanus was very progressive and the invention of the new art of printing gave him an opportunity to publish Purbach's treatise, which went through several editions and doubtless had much to do in promoting dissatisfaction with the ancient Ptolemaic system, and was thus most significant in preparing a background for the coming of the new Copernican order.

Purbach deserves the name that has been given him of the father of mathematical astronomy in modern times.

He offered to secure them and also to provide for Purbach's support during the stay in Rome necessary for the study.

As we have said, young M�ller made his studies with Purbach at Vienna, became very much interested in astronomy and mathematics, at his master's suggestion accompanied Cardinal Bessarion to Italy and under his patronage took up the work of providing an abridgment of Ptolemy's great work, the "Almagest," in a Latin translation for those who might be deterred from the Greek.

Unfortunately, however, Purbach died before his journey to Rome.