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The tautological ring of the moduli ...

Pixton, Aaron.

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The tautological ring of the moduli space of curves.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The tautological ring of the moduli space of curves./
Author:	Pixton, Aaron.
Description:	133 p.
Notes:	Source: Dissertation Abstracts International, Volume: 74-09(E), Section: B.
Contained By:	Dissertation Abstracts International74-09B(E).
Subject:	Mathematics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3562218
ISBN:	9781303097669

The tautological ring of the moduli space of curves.
Pixton, Aaron.

The tautological ring of the moduli space of curves. - 133 p.

Source: Dissertation Abstracts International, Volume: 74-09(E), Section: B.

Thesis (Ph.D.)--Princeton University, 2013.

The tautological ring of the moduli space of curves Mg is a subring R*( Mg ) of the Chow ring A*( Mg ). The tautological ring can also be defined for other moduli spaces of curves, such as the moduli space of curves of compact type Mcg or the moduli space of Deligne-Mumford stable pointed curves Mg,n . We conjecture and prove various results about the structure of the tautological ring.

ISBN: 9781303097669Subjects--Topical Terms:

515831
Mathematics.

The tautological ring of the moduli space of curves.
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100 1 $a Pixton, Aaron. $3 2049794
245 1 4 $a The tautological ring of the moduli space of curves.
300 $a 133 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-09(E), Section: B.
500 $a Adviser: Rahul Pandharipande.
502 $a Thesis (Ph.D.)--Princeton University, 2013.
520 $a The tautological ring of the moduli space of curves Mg is a subring R*( Mg ) of the Chow ring A*( Mg ). The tautological ring can also be defined for other moduli spaces of curves, such as the moduli space of curves of compact type Mcg or the moduli space of Deligne-Mumford stable pointed curves Mg,n . We conjecture and prove various results about the structure of the tautological ring.
520 $a In particular, we give two proofs of the Faber-Zagier relations, a large family of relations between the kappa classes in R*( Mg ) that contains all known relations. The first proof (joint work with R. Pandharipande) uses the virtual geometry of the moduli space of stable quotients developed by Marian, Oprea, and Pandharipande. The second proof (joint work with R. Pandharipande and D. Zvonkine) uses Witten's class on the moduli space of 3-spin curves and the classification of semisimple cohomological field theories by Givental and Teleman. The second proof has the disadvantage that it only proves the image of the Faber-Zagier relations in cohomology, but the advantage that it also proves an extension of the relations to Mg,n that was conjectured by the author. These relations on Mg,n and their restrictions to smaller moduli spaces of curves seem to describe all known relations in the tautological ring.
520 $a We also prove several combinatorial results about the structure of the Gorenstein quotient rings of R*( Mg ) and R*( Mcg ). This includes several new families of relations that are similar to the Faber-Zagier relations, as well as joint work with F. Janda giving formulas for ranks of restricted socle pairings in R*( Mcg ).
520 $a The appendix presents data obtained by computer calculations of the tautological relations on Mg,n and their restrictions to Mcg,n and Mrtg,n for small values of g and n. The data suggests several new locations in which the tautological ring might not be a Gorenstein ring.
590 $a School code: 0181.
650 4 $a Mathematics. $3 515831
650 4 $a Theoretical Mathematics. $3 1672766
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710 2 $a Princeton University. $b Mathematics. $3 2049791
773 0 $t Dissertation Abstracts International $g 74-09B(E).
790 $a 0181
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3562218