A mathematician seated at a table, working on mathematical equations, from a portfolio of prints of the Imperial Gallery of Paintings in Vienna; plate 34 of the series by Anton Joseph von Prenner is licensed under CC-CC0 1.0
Anton Joseph von Prenner (Austrian, 1683–1761)
A mathematician seated at a table, working on mathematical equations, 1728
Austrian,
Etching; Sheet: 8 9/16 × 6 1/8 in. (21.7 × 15.5 cm)
The Metropolitan Museum of Art, New York, Harris Brisbane Dick Fund, 1953 (53.601.182)
http://www.metmuseum.org/Collections/search-the-collections/650974