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Noncommutative geometry and compactifications of the moduli space of curves

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 نشر من قبل Alastair Hamilton
 تاريخ النشر 2007
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 تأليف Alastair Hamilton




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In this paper we show that the homology of a certain natural compactification of the moduli space, introduced by Kontsevich in his study of Wittens conjectures, can be described completely algebraically as the homology of a certain differential graded Lie algebra. This two-parameter family is constructed by using a Lie cobracket on the space of noncommutative 0-forms, a structure which corresponds to pinching simple closed curves on a Riemann surface, to deform the noncommutative symplectic geometry described by Kontsevich in his subsequent papers.



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