## On the Influence of Signs in Mathematical Reasoning.

1 p.l., 53 pp. Large 4to, orig. blue wrappers, uncut. London: J. Smith, 1826.

A remarkable association copy of this extremely rare offprint, linking two of the greatest scientists of the 19th century, and pre-figuring Babbage’s later work on his difference and analytical engines. This copy bears the following inscription on the title-page in Babbage’s hand: “To M. Gauss from the Author.” Additionally, Babbage has written on the upper wrapper: “M. Gauss. Influence of Signs. 3. Ch. Babbage. On the influence of signs in mathematical reasoning.”

Babbage here presents his views on the importance of symbolic notation in mathematical reasoning. He... More about On the Influence of Signs in Mathematical Reasoning