DE MORGAN, Augustus. 20601



Autograph Letter Signed, to H.Kindt [?], about “my account of Wright” in the Philosophical Magazine, adding the fact that Wright kept an instrument maker’s shop in Fleet Street, with other background details. 2 pp. 7 x 4 inches, fine. 91 Adelaide Road, 18 May 1863. Augustus De Morgan (1806-71), mathematician and logician. He formulated De Morgan’s laws and introduced the term mathematical induction, making its idea rigorous. “Wright was introducd to the knowledge of the German world by Kant …”