De Morgan Augustus

De Mor·gan

 (dĭ môr′gən), Augustus 1806-1871.
British mathematician who rigorously defined the technique of mathematical induction and greatly contributed to the development of symbolic logic.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.