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arXiv 1402.1464math.COmath.AG
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量子和仿射舒伯特演算和麦克唐纳多项式

Quantum and affine Schubert calculus and Macdonald polynomials

Avinash J. Dalal, Jennifer Morse

摘要:

我们明确地建立了对称Macdonald多项式的理论与量子和仿射Schubert演算对齐使用的发现,区别弱链可以识别的链在强(Bruhat)阶偏序集上的类型- $A$仿射外尔群。我们构造了两个单参数函数族,它们分别与Hall-Littlewood和Macdonald的$P$ -函数正迁移,并专门研究了仿射格拉斯曼的Schubert类同调和上同调的代表.我们的方法使我们猜想,在一个定义的3点属0 Gromov-Witten不变量旗流形的所有元素可以制定为强覆盖。

英文摘要:

We definitively establish that the theory of symmetric Macdonald polynomials aligns with quantum and affine Schubert calculus using a discovery that distinguished weak chains can be identified by chains in the strong (Bruhat) order poset on the type-$A$ affine Weyl group. We construct two one-parameter families of functions that respectively transition positively with Hall-Littlewood and Macdonald's $P$-functions, and specialize to the representatives for Schubert classes of homology and cohomology of the affine Grassmannian. Our approach leads us to conjecture that all elements in a defining set of 3-point genus 0 Gromov-Witten invariants for flag manifolds can be formulated as strong covers.

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