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Non-invariance of strong and weak approximation properties under extension of the ground field
梁永祺(University of Science and Technology of China)
Friday, April 26th, 2019, 8:30 AM 闵行数学楼402报告厅 |
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Abstract: We consider algebraic varieties defined over a number field. We will define strong and weak approximation properties (with or without Brauer-Manin obstruction) for rational points on varieties. We will talk about some results on the non-invariance of such properties under the extension of the ground field.
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