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Co-fibered products of algebraic curves |
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| Authors: | Fedor Bogomolov Yuri Tschinkel |
| Affiliation: | (1) Courant Institute, New York University, New York, USA |
| Abstract: | We give examples of failure of the existence of co-fibered products in the category of algebraic curves. |
| Keywords: | Unramified cover Quaternion algebra Shimura variety Arithmetic group |
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