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- 1Affine Grassmannian
- 1Attractive point
- 1Peterson translate
- 1Schubert variety
- 1T-orbit closure
- 1T-surface
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Fall 2010
In this thesis we examine singularities of surfaces and affine Schubert varieties in the affine Grassmannian $\mathcal{G}/\mathcal{P}$ of type $A^{(1)}$, by considering the action of a particular torus $\widehat{T}$ on $\mathcal{G}/\mathcal{P}$. Let $\Sigma$ be an irreducible...
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