Geometry/Physics Seminar

Title: Atiyah Class and Hochschild Cohomology
Speaker: Paul Bressler
Speaker Info: Indiana University
Brief Description:
Special Note: Special Session (Please note room change)

The Atiyah class of the tangent bundle T endows the (shifted) tangent bundle T[-1] with a canonical structure of a Lie algebra object in the derived category of coherent sheaves. This structure was lifted by Kapranov to an L-infinity structure on T[-1]. I will sketch an alternative construction of an L-infinity structure and its relationship to the DGA of Hochschild cochains on the structure sheaf.
Date: Monday, April 14, 2008
Time: 3:00pm
Where: Lunt 104
Contact Person: Prof. Gabriel Kerr
Contact email: gdkerr@math.northwestern.edu
Contact Phone: 773-936-6405
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