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INVLOCCY

Invariants of local Calabi-Yau 3-folds

Total Cost €

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EC-Contrib. €

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Partnership

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Project "INVLOCCY" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITEIT UTRECHT 

Organization address
address: HEIDELBERGLAAN 8
city: UTRECHT
postcode: 3584 CS
website: www.uu.nl

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Netherlands [NL]
 Project website https://www.staff.science.uu.nl/
 Total cost 165˙598 €
 EC max contribution 165˙598 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-06-01   to  2017-05-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITEIT UTRECHT NL (UTRECHT) coordinator 165˙598.00

Map

 Project objective

The study of Gromov-Witten (GW), Donaldson-Thomas, and stable pair invariants of Calabi-Yau 3-folds X forms an active area of research for geometers and physicists. These invariants play a central role in string theory and have relations with many branches of mathematics including number theory and representation theory. I am interested in questions of enumerative geometry on algebraic surfaces S. Invariants of the total space X of the canonical bundle over S can be used to answer classical enumerative questions on S. Two recent developments in stable pair theory are: (1) A better understanding of stable pairs on X not contained in the zero-section S. (2) Refinements of stable pair invariants. The first theme of my project is the study of stable pairs on X not contained in S in relation to enumerative questions. For Fano surfaces, GW invariants with sufficiently many point insertions are enumerative. By the GW/stable pairs correspondence these are equal to certain stable pair invariants of X. When the curve class is not sufficiently ample, the stable pair count may include stable pairs on X not contained in S. I propose to compute such contributions in order to obtain curve counts on S outside the ample regime. The second theme of my project is the study of refined stable pair invariants. I intend to relate the refined topological vertex appearing in the physics literature to refined invariants in the mathematics literature. Since stable pair invariants are often easiest to calculate of all the invariants of Calabi-Yau 3-folds, I expect this leads to new curve counting formulae and new calculations of refined invariants. Utrecht University, housing one of the leading schools in geometry in Europe, and Prof. Faber, one of the world's leading experts on moduli of curves, provide the perfect location and supervisor for this project. The diverse expertise of the members of the Mathematics (and Physics) Department at UU allow me to explore links with other areas.

 Publications

year authors and title journal last update
List of publications.
2017 M. Kool and L. Göttsche
Virtual refinements of the Vafa-Witten formula
published pages: 36 pages, ISSN: , DOI:
preprint on arXiv, to be submitted to journal 2019-07-23
2016 M. Kool and R.P. Thomas (with an appendix by A. Pixton and D. Zagier)
Stable pairs with descendents on local surfaces I: the vertical component
published pages: 51 pages, ISSN: , DOI:
preprint on arXiv.org, accepted for publication in Pure and Applied Mathematics Quarterly 2019-07-23
2017 Amin Gholampour, Martijn Kool
Rank 2 wall-crossing and the Serre correspondence
published pages: 1599-1617, ISSN: 1022-1824, DOI: 10.1007/s00029-016-0293-3
Selecta Mathematica 23/2 2019-07-23
2017 Amin Gholampour, Martijn Kool, Benjamin Young
Rank 2 Sheaves on Toric 3-Folds: Classical and Virtual Counts
published pages: rnw302, ISSN: 1073-7928, DOI: 10.1093/imrn/rnw302
International Mathematics Research Notices 2019-07-23
2017 M. Kool and A. Gholampour
Higher rank sheaves on threefolds and functional equations
published pages: 33 pages, ISSN: , DOI:
arxiv.org, to be submitted to journal 2019-07-23

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The information about "INVLOCCY" are provided by the European Opendata Portal: CORDIS opendata.

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