Rodica Simion

Rodica Simion ( born January 18, 1955 in Romania; † 7 January 2000) was a Romanian - American mathematician who worked on algebraic combinatorics and abzählender.

Simion studied at the University of Bucharest (pre- diploma 1974) and ( after their emigration to the USA in 1976 ) at the University of Pennsylvania, where she received her doctorate in 1981 at Herbert Wilf (On Compositions of multi- sets). She taught at Southern Illinois University and Bryn Mawr College, before she was in 1987 at George Washington University, where she received a full professorship in 1997.

With Frank Schmidt she explored the structure of the set of permutations of n objects that leave out a permutation pattern of three objects ( for example, they proved the independence of the number of the choice of the pattern of the three objects). They also dealt with the combinatorics of special functions ( with Dennis Stanton ) and not intersecting Zerfällungen ( noncrossing partitions ). Richard P. Stanley named Simsun permutations for her and Sheila Sundram, the discoverers.

She organized the exhibition was opened in 1995 Mathematics Beyond Numbers in the Maryland Science Museum.

Writings

• Convex polytopes and enumeration. Advances in applied mathematics, Volume 18, 1997, p.149 -180
• Noncrossing partitions. Discrete Mathematics, Volume 217, 2000, S.367 -409