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| Glavni autor: | |
|---|---|
| Format: | Preprint |
| Izdano: |
2013
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| Teme: | |
| Online pristup: | https://arxiv.org/abs/1302.4042 |
| Oznake: |
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- We establish a version of von Staudt's theorem on mappings which preserve harmonic quadruples for projective lines over (not necessarily commutative) rings with "sufficiently many" units, in particular 2 has to be a unit.