Rodica Simion

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

Simion studied at the University of Bucharest (intermediate diploma in 1974) and (after emigrating to the USA in 1976) at the University of Pennsylvania , where she received her doctorate in 1981 with Herbert Wilf ( On compositions of multisets ). She taught at Southern Illinois University and Bryn Mawr College before she was at George Washington University from 1987 , where she received a full professorship in 1997.

With Frank Schmidt she investigated the structure of the set of permutations of n objects that omit a permutation pattern of three objects (for example, they proved the independence of the number from the choice of the pattern of the three objects). She also dealt with the combinatorics of special functions (with Dennis Stanton) and noncrossing partitions. Richard P. Stanley named Simsun permutations after her and Sheila Sundram, the discoverers.

She organized the 1995 math exhibition Beyond Numbers at the Maryland Science Museum.

Fonts

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

Web links

Individual evidence

  1. ↑ Described as a bachelor's degree in Richard Stanley's obituary
  2. ^ Schmidt, Simion Restricted permutations , European Journal of Combinatorics, Volume 6, 1985, pp. 383-406
  3. ↑ Simion Combinatorial Statistics of Non Crossing Partitions , Journal of Combinatorial Theory, Volume 66, 1994, p. 270
personal data
SURNAME Simion, Rodica
BRIEF DESCRIPTION Romanian-American mathematician
DATE OF BIRTH January 18, 1955
PLACE OF BIRTH Romania
DATE OF DEATH January 7, 2000