Philosophy of logic (Harper essays in philosophy)

Philosophy of logic (Harper essays in philosophy) by Putnam, Hilary. paperback edition. ISBN: 9780061360428.

First published in 1971, Professor Putnams essay concerns itself with the ontological problem in the philosophy of logic and mathematics - that is, the issue of whether the abstract entities spoken of in logic and mathematics really exist. He also deals with the question of whether or not reference to these abstract entities is really indispensible in logic and whether it is necessary in physical science in general.