Numbers theory, 19th century illustration. Table of permutations, or permutation pyramid, calculated to 50 items by John Snart. Copperplate engraving from the Encyclopaedia Londinensis, or Universal Dictionary of Arts, Sciences, and Literature; Volume XVII; Edited by Wilkes, John. Published in 1820. | |
Licence : | Libre de droits |
Crédit: | Science Photo Library / Photostock-Israel |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |