| Project/Area Number |
06640082
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | NIHON UNIVERSITY |
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Principal Investigator |
KOHNO Noriko NIHON UNIVERSITY,Department of Mathematics College of Science and Technology, Lecturer, 理工学部, 専任講師 (90215195)
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Ryuji NIHON UNIVERSITY,Department of Mathematics College of Science and Technology, Pr, 理工学部, 教授 (50120465)
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| Project Period (FY) |
1994 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | Diophantine Approximation / Diophantine equation / Elliptic Curve / Algebraic curve / Integer point / Transcendence / Transcendental Number / Transcendence Measure / 周期 / 擬周期 / 零点評価 / 代数多様体 / 代数群 / 対数一次形式 / 超超数 |
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| Research Abstract |
For transcendental number x, we consider Diophantine approximations by algebraic number beta in terms of height of beta and degree of beta. By using such approximation, called transcendental (or transcendence) measure, we observe integer points on algebraic curves, for example, elliptic curves. We obtain here a refinement for such measure when x comes from coordinates of inverse image by exponential map of rational points of an algebraic group defined over a number field, which is defined as a non trivial extention of a simple abelian variety by the additine group. We get also some finiteness result concerning with integer solutions to certain exponential Diophantine equations.
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