| Project/Area Number |
21J10242
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Review Section |
Basic Section 11010:Algebra-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
WANG Long 東京大学, 数理科学研究科, 特別研究員(DC2)
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| Project Period (FY) |
2021-04-28 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2022: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2021: ¥800,000 (Direct Cost: ¥800,000)
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| Keywords | Calabi-Yau variety / Cone conjecture / Dynamical degree / Arithmetic degree / Calabi－Yau varieties / Birational automorphisms / Arithmetic degrees / Dynamical degrees |
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| Outline of Research at the Start |
One theme of string theory is mirror symmetry of Calabi-Yau varieties. This enlightened Morrison to formulate the cone conjecture. Kawamata proposed a refinement whose motivation originated from birational geometry. One can say that the cone conjecture connects mirror symmetry and birational geometry of Calabi-Yau varieties.
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| Outline of Annual Research Achievements |
Calabi-Yau varieties play a prominent role in many branches of mathematics including algebraic geometry. The mirror symmetry of Calabi-Yau varieties enlightened D. Morrison to formulate the cone conjecture. Y. Kawamata proposed a refinement whose motivation originated from birational geometry. In this direction, besides two published papers, I completed one preprint.
The study of the birational automorphism groups is not only interrelated with the cone conjecture but also of independent interest. One attractive area is the dynamics of birational automorphisms from both geometric and arithmetic viewpoints. Recently, S. Kawaguchi and J. H. Silverman proposed a conjecture which connects dynamical and arithmetic degrees of dominant rational self-maps. This conjecture is known for some cases of morphisms, but is much less known for arbitrary rational maps due to the lack of functoriality of height functions. In this direction, besides two published papers, I completed two preprints.
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| Research Progress Status |
令和4年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和4年度が最終年度であるため、記入しない。
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