| Project/Area Number |
09440015
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Algebra
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| Research Institution | Kobe University |
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Principal Investigator |
SAITO Masa-hiko Kobe University, Faculty of Science, Professor, 理学部, 教授 (80183044)
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| Co-Investigator(Kenkyū-buntansha) |
TAKANO Kyoichi Kobe University, Faculty of Science, Professor, 理学部, 教授 (10011678)
SASAKI Takeshi Kobe University, Faculty of Science, Professor, 理学部, 教授 (00022682)
NOUMI Masatoshi Kobe University, Graduate School of Science and Technology, Professor, 自然科学研究科, 教授 (80164672)
YOSHIOKA Kota Kobe University, Faculty of Science, Associate Professor, 理学部, 助教授 (40274047)
TAKAYAMA Nobuki Kobe University, Faculty of Science, Professor, 理学部, 教授 (30188099)
山田 泰彦 神戸大学, 理学部, 助教授 (00202383)
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| Project Period (FY) |
1997 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 1999: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 1998: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1997: ¥5,800,000 (Direct Cost: ¥5,800,000)
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| Keywords | Mirror Symmetry / GKZ Hypergeometric System / Calabi-Yau manifolds / Gromov-Witten invariants / Rational Elliptic Surfaces / Painleve equations / Spaces of Initial Values / Moduli spaces of Vector Bundles / Mirror 対称性 / GKZ 超幾何系 / カラビ・ヤウ多様体 / グロモフ・ウイッテン不変量 / プレポテンシャル / ベクトル波 / 化積分系 / ミラー対称性 / 湯川カップリング / GK2型超幾何微分方程式系 / カラビ=ヤウ多様体 |
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| Research Abstract |
During the period of the project, we have investigated the following subjects and obtained the following results. (i)Mirror Symmetry Conjecture for Calabi-Yau manifolds, (ii)Counting Curves of higher genus in Rational Elliptic Surfaces, (iii)Lie theoretic aspects on Painleve equations, Algebro-geometric aspects on Painleve equations, GKZ hypergeometric systems and their Grobner deformations. As for (i), we have been studying Gromov-Witteninvariants for certain Calabi-Yau 3-folds and computed a part of A-model prepotentials by means of the theta function of the EィイD28ィエD2-lattice while their B-model prepotential had already calculated by GKZ hypergometric series. As a result, we have checked MSC mathematically for those cases. Developing further, in (ii)we have investigated counting problems of curves of higher genus in rational elliptic surfaces. We propose the holomorphic anomaly equation(HAE), which the prepotential should satisfy. By using the Jacobi's triple product formula and the relative Lefschetz decomposition, we have checked the prepotential satisfies the HAE.
As for the studies of Painleve equations ((iii)), our group have been developing Lie theoretic approach and algeblo-geometric approach, which clarify the relations among Painleve equations, the symmetry of Affine Weyl groups and the geometry of rational surfaces.
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