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Classification of integral trees |
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| Authors: | Takayuki Hibi |
| Institution: | (1) Department of Mathematics, Faculty of Science, Nagoya University, Chikusa-ku, 464 Nagoya, Japan |
| Abstract: | A finite poset Q is called integral over a field k if there exists an ASL (algebra with straightening laws) domain on Q {– } over k. We classify all  trees (rank one connected posets without cycles) which are integral over an infinite field. |
| Keywords: | Primary 06A10 secondary 13H10 |
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