VIETA, Franciscus (1540-1603). Opera mathematica, Leyden: ex officina Bonaventurae & Abrahami Elzeviriorum, 1646, 2° (312 x 200mm.), FIRST COLLECTED EDITION, title, index and section on the calendar printed in red and black, 3 volvelles, woodcut diagrams (light spotting, upper margin of Nn dampstained not affecting text, first 2 leaves guarded at inner margin, stamp to recto and verso of title), 19th-century sheep-backed boards. [Brunet V, 1212; Norman 2152; Willems 609].