# Mathematician:Edward M. Reingold

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## Mathematician

American computer scientist active in the fields of algorithms, data structures, graph drawing, and calendrical calculations.

Inventor of the notation $\lg x$ as a convenient notation for $\log_2 x$.

## Nationality

American

## History

- Born: 1945
- 1996: Inducted as a Fellow of the Association for Computing Machinery
- 2000: Retired from University of Illinois at Urbana-Champaign. Took a position as professor of computer science and applied mathematics at Illinois Institute of Technology.

## Theorems and Definitions

## Publications

- 1975 -- 1976:
*Tiling with Incomparable Rectangles*(*Journal of Recreational Mathematics***Vol. 8**: pp. 112 – 119) (with A.C.C. Yao and B. Sands)

- 1981
*Tidier Drawings of Trees*(with John Tilford) (in which the Reingold-Tilford Algorithm is introduced)

- 1997:
*Calendrical Calculations*(with Nachum Dershowitz) (3rd edition 2007)