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arXiv · 1310.5357

Projective lines as groupoids with projection structure

Anders Kock
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Abstract

The coordinate projective line over a field is seen as a groupoid with a further `projection' structure. We investigate conversely to what extent such an, abstractly given, groupoid may be coordinatized by a suitable field constructed out of the geometry.

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Anders Kock. 2013-10-20. Projective lines as groupoids with projection structure. https://arxiv.org/abs/1310.5357

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