Mathematical Treasure: Collected Works of Giulio di Fagnano

Giulio Carlo di Fagnano (1682-1766) was an Italian mathematician. He was noted for his work on determining the length and division of arcs of various curves with a special focus on the lemniscate. In his Produzione Matematiche (2 volumes, 1750), he discussed his work and established a foundation for the study of elliptical integrals.

The title page of Volume I of Produzione, with a lemniscate within its cover design:

Giulio Carlo’s Preface:

These images are shown through the courtesy of the European e-rara archive.

Index to Mathematical Treasures