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Changjian Su
Researcher at University of Toronto
Publications - 23
Citations - 221
Changjian Su is an academic researcher from University of Toronto. The author has contributed to research in topics: Chern class & Quantum cohomology. The author has an hindex of 7, co-authored 19 publications receiving 171 citations. Previous affiliations of Changjian Su include Columbia University.
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Shadows of characteristic cycles, Verma modules, and positivity of Chern-Schwartz-MacPherson classes of Schubert cells
TL;DR: Ohmoto et al. as discussed by the authors showed that the homogenized, torus equivariant Chern-Schwartz-MacPherson (CSM) class of a constructible function is the restriction of the characteristic cycle of the zero section of the cotangent bundle of a complex projective manifold.
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Motivic Chern classes of Schubert cells, Hecke algebras, and applications to Casselman's problem
TL;DR: Motivic Chern classes are elements in the K-theory of an algebraic variety $X$ depending on an extra parameter $y$. They are determined by functoriality and a normalization property for smooth $X$..
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Restriction formula for stable basis of the Springer resolution
TL;DR: In this article, the restriction formula for stable basis of the Springer resolution and generalization of it to cotangent bundles of partial flag varieties is given. But this formula is restricted to Schubert varieties.
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On the K-theory stable bases of the Springer resolution
TL;DR: In this paper, the K-theoretic stable bases of cotangent bundles of flag varieties were studied in terms of the affine Hecke algebra and twisted group algebra of Kostant-Kumar.
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Positivity of Segre-MacPherson classes
TL;DR: In this paper, it was shown that the signed Segre-MacPherson (SM) class of a constructible function on a complex nonsingular variety with globally generated tangent bundle is effective.