Search Loci: Convergence:
One is hard pressed to think of universal customs that man has successfully established on earth. There is one, however, of which he can boast: the universal adoption of the Hindu-Arabic numerals to record numbers. In this we perhaps have man's unique worldwide victory of an idea.
Mathematical Circles Squared, Boston: Prindle, Weber and Schmidt, 1972.
What's in Convergence?
Images for Classroom Use
Use these images of mathematical objects, texts, and people in your classroom!
Mathematical Treasures: Images of historical objects and texts from the Columbia University Library.
The Quipu: A collection of images of Inca quipus, with references to their earliest descriptions.
Counting Boards: Two photos of a rare and fine example of a counting table the author found in a French museum.
Paul R. Halmos Photograph Collection: Photos of mathematicians from the 1950s through the 1990s.