Y.P.'s Research Page

Current Research Area: Gromov-Witten theory and related fields.

General Research Interests: Algebraic geometry and mathematical physics, with emphasis placed on Gromov-Witten theory and its relations with and applications to birational geometry, Hodge theory, moduli of curves, symplectic topology, K-theory, integrable systems, representation theory, and mirror symmetry.

Seminars that I organized or supervised:

All seminars are listed at AG group in Utah website.

List of papers (mostly with files or links) Comments on typos, expositions, and contents etc... are very welcome! Some of the papers are available from ArXiV.org.

Higher genus quantum K-theory, (with You-Cheng Chou and Leo Herr), arXiv:2305.10137.
Quantum K-invariants and Gopakumar-Vafa invariants II. Calabi-Yau threefolds at genus zero, (with You-Cheng Chou), arXiv:2305.08480.
Gopakumar-Vafa Invariants = Quantum K-invariants on Calabi-Yau threefolds, (with Y.-C. Chou), arXiv:2212.13432, Bumsig Kim Memorial Volume
Quantum K-invariants and Gopakumar-Vafa invariants I. The quintic threefold, (with Y.-C. Chou), arXiv:2211.00788.
The Log Product Formula in quantum K-theory, (with Y.-C. Chou and L. Herr), arXiv:2012.09379, to be published in Math. Proc. Cambridge Philos. Soc.
Quantum flips I: local model, (with H.-W. Lin and C.-L. Wang), arXiv:1912.03012, Boris Dubrovin Memorial Volume.
Virasoro constraints for moduli of weighted pointed stable curves (with Y.-C. Chou), arxiv:1908.09027.
Variations on the theme of quantum Lefschetz (with H. Fan), arXiv:1812.01732.
Towards a quantum Lefschetz hyperplane theorem in all genera (with H. Fan), arXiv:1712.03573.
Quantum Cohomology under Birational Maps and Transitions, (with H.-W. Lin and C.-L. Wang), arXiv:1705.04799.
A product formula for log Gromov--Witten invariants, (with F. Qu), arXiv:1701.04527.
On Gromov-Witten theory of projective bundles, (with H. Fan), arXiv:1607.00740.
Towards A + B theory in conifold transitions, (with H.-W. Lin and C.-L. Wang), arXiv:1502.03277.
A proof of the Landau-Ginzburg/Calabi-Yau correspondence via the crepant transformation conjecture (with N. Priddis and M. Shoemaker), arXiv:1410.5503.
Invariance of quantum rings under ordinary flops: III, (with H.-W. Lin, F. Qu and C.-L. Wang), arXiv:1401.7097.
Invariance of quantum rings under ordinary flops: II, (with H.-W. Lin and C.-L. Wang), arXiv:1311.5725.
Invariance of quantum rings under ordinary flops: I, (with H.-W. Lin and C.-L. Wang), arXiv:1109.5540.
A Mirror Theorem for the Mirror Quintic, (with M. Shoemaker), arXiv:1209.2487, to appear in Geometry and Topology.
Euler characteristics of universal cotangent line bundles on $\Mbar_{1,n}$ (with F. Qu), arXiv:1211.2450, to appear in proceedings of the AMS.
Introduction to GWT and CTC, my notes from Grenoble Lectures in the summer 2011.
Analytic continuations of quantum cohomology, (with H.-W. Lin and C.-L. Wang), to appear in proceedings ICCM 2010.
Algebraic cobordism of bundles on varieties (with R. Pandharipande) arXiv:1002.1500, to appear in JEMS.
Algebraic structures on the topology of moduli spaces of curves and maps (with R. Vakil), arXiv:0809.1879, to appear in Surveys in Differential Geometry.
Invariance of Gromov--Witten theory under a simple flop (with Y. Iwao, H.-W. Lin and C.-L. Wang), arXiv:0804.3816, to appear in Crelle's.
The quantum orbifold cohomology of weighted projective spaces (with T. Coates, A. Corti, and H.-H. Tseng), math.AG/0608481, Acta Mathematica 202 (2009) no. 2.
Flops, motives and invariance of quantum rings (with H.-W. Lin and C.-L. Wang) (final version 30 June 2006) math.AG/0608370, Annals of Math, 172 (2010) no.1 243-290.
On independence of generators of the tautological rings (with D. Arcara), math.AG/0605488, Compositio Math 144 (2008) no. 6 1497--1503.
Notes on axiomatic Gromov--Witten theory and applications, arXiv:0710.4349, Algebraic geometry---Seattle 2005. Part 1, 309--323, Proc. Sympos. Pure Math., 80, Part 1, Amer. Math. Soc., Providence, RI, 2009.
Invariance of tautological equations II: Gromov--Witten theory, (Appendix with Y. Iwao,) math.AG/0605708, JAMS 22 (2009) no. 2, 331-352.
New! An exciting consequence of ITE2 has just come out. In math.AG/0612510 by Faber, Shadrin, and Zvonkine, they solved Witten's r-spin conjecture completely. In fact, that was the original motivation of ITE project, which we were not able to carry through....
Invariance of tautological equations I: conjectures and applications, math.AG/0604318, J Euro Math Soc 10 (2008) no. 2, 399-413.
Tautological equations in \Mbar_{3,1} via invariance conjectures (with D. Arcara). math.AG/0503184. updated version. To appear in Canadian Journal of Mathematics.
Tautological equations in genus 2 via invariance conjectures (with D. Arcara), math.AG/0502488. updated version.
Witten's conjecture, Virasoro conjecture, and invariance of tautologicalequations, math.AG/0311100.
Witten's conjecture and Virasoro conjecture up to genus two, math.AG/0310442. To appear in the proceedings of the conference "Gromov-Witten Theory of Spin Curves and Orbifolds", Contemp. Math., AMS.
Quantum K-Theory II: Computations and open problems, in preparation.
Frobenius manifolds, Gromov--Witten theory, and Virasoro constraints, (with R. Pandharipande), a book in preparation, Part1.ps, Part2.ps (partial), (Part 3 not yet available).
A reconstruction theorem in quantum cohomology and quantum K-theory, (with R. Pandharipande), math.AG/0104084. Updated PDF file. Amer. J. Math., 126 (2004), no. 6, 1367--1379.
Quantum K-theory on flag manifolds, finite difference Toda lattices and quantum groups (with A. Givental), Invent. Math. 151, 193-219, 2003. math.AG/0108105, Link to the published version.
Quantum K-Theory I: Foundations, math.AG/0105014. Duke Math. J. 121 (2004), no. 3, 389-424, Link.
Virtual Fundamental Classes of Zero Loci, (with D. Cox and S. Katz), in "Advances in algebraic geometry motivated by physics" (Lowell, MA, 2000), 157--166, Contemp. Math., 276, Amer. Math. Soc., Providence, RI, 2001. math.AG/0006116.
Quantum Lefschetz hyperplane theorem, Invent. Math. 145 (2001), no. 1, 121--149. math.AG/0003128. Link to the published version.
A formula for Euler characteristics of tautological line bundles on the Deligne-Mumford spaces, IMRN 1997 No. 8. PDF.
Quantum K-theory, PhD thesis, UC Berkeley, 1999.
The quadrupole moment of Delta and Hyperion calculated on the constituent quark shell model in large oscillator basis, (with W.-C. Chang), B.S. thesis, communicated in the annual meeting of Taiwanese physical society, 1991.

https://orcid.org/0000-0003-2458-3215

Research in Utah

Algebraic Geometry Group
Algebraic Geometry Seminar
String Geometry Seminar
Research page of the mathematics department. (outdated!)
OSP at U Conflict of interest form Travel administration

Acknowledgements: The above research is partially supported by

NSF (Links: DMS, Fastlane, research.gov)
AMS Centennial Fellowship (2005-2007).

Y.P.'s homepage

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