M. Jardim's talk

[Ugo Bruzzo]

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SISSA GEOMETRY AND MATH PHYS SEMINARS
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Please note change of time

Professor Marcos Jardim (University of
Campinas Brazil) will give a talk
entitled

The ADHM variety

on Thursday, November 26, at 12:00 in Room
D, SISSA Main Building.

Abstract: The ADHM equation was introduced by Atiyah, Drinfeld, Hitchin
and Manin in relation to the construction of instantons on the Euclidean
4-space. Later, it was shown by Nakajima that there exists a 1-1
correspondence between "stable" solutions and torsion-free sheaves on
CP^2. We investigate the affine variety of all solutions of the ADHM
equation, and relate the "unstable" solutions with perverse sheaves on
CP^2.

U. Bruzzo

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