Professor H. Sheffer Dies in Boston at 80

Henry M. Sheffer '05, professor of Philosophy, emeritus, and a pioneer in mathematical logic, died Tuesday in Boston at the age of 30.

In his 36 years on the Harvard faculty, Sheffer taught logic and courses on British empiricism, philosophy of science and the philosophic method.

He simplified the foundations of logic as presented in Whitehead's and Russell's Principia Mathematica, and later worked in developing the theories of notational relativity and pre-assertional logic.