In this paper we extend the work of Fomin and Greene on noncommutative Schur functions by defining noncommutative analogs of Schubert polynomials. If the variables satisfy certain relations (essentially the same as those needed in the theory of noncommutative Schur functions), we prove a Pieri-type
Operator Calculus forQ̃-Polynomials and Schubert Polynomials
✍ Scribed by Alain Lascoux; Piotr Pragacz
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 522 KB
- Volume
- 140
- Category
- Article
- ISSN
- 0001-8708
No coin nor oath required. For personal study only.
✦ Synopsis
de die a maria Contents.
Introduction.
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Divided differences associated with the hyperoctahedral groups. 2. Reproducing kernels and a vanishing property.
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Action of s on the basis [S + } Q I ] an inductive approach. 4. Action of s on the basis [S + } Q I ] via the vanishing property.
5. Key formula and vertex operators.
Appendices. A (written collaboration with J. Ratajski). Symplectic Schubert polynomials aÁ la polonaise. B. Three geometric applications.
📜 SIMILAR VOLUMES
We study Balanced labellings of diagrams representing the inversions in a permutation .
Schubert polynomials were introduced and extensively developed by Lascoux and Schützenberger, after an earlier less combinatorial version had been considered by Bernstein, Gelfand and Gelfand and Demazure. We give a new development of the theory of Schubert polynomials based on formal computations i