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A time-like surface in Minkowski 3-space which contains light-like lines |
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| Authors: | Shyuichi Izumiya Akihiro Takiyama |
| Institution: | (1) Department of Mathematics, Faculty of Science, Hokkaido University, 060-0810 Sapporo, Japan |
| Abstract: | Simple characterizations of a pseudosphere or a time-like plane in Minkowski 3-space by the existence of light-like lines are given. |
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