# On This Day

• ### 2-11-1141

Hugh of St. Victor died. For him the word "mathematica" had two meanings: When the t was not aspirated it meant "the superstition of those who place the destiny of men in the constellations" of the heavens; when the t was aspirated it meant the science of "abstract quantity."

Hugh of St. Victor
• ### 2-11-1897

Emil Post, like so many logicians who did important work in propositional logic, was born in Poland. His family came to the U.S. in 1904 and he went on to become a distinguished logician. In his 1920 Ph.D. dissertation he proved the consistency and completeness of propositional logic.

Emil Post
• ### 2-11-1897

Indiana bill to fix the value of pi was defeated in the state senate. The bill specified several values for pi to simplify computation.