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Joins and Meets of Symmetric Idempotents |
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| Authors: | Reinhard Börger |
| Affiliation: | 1. Fakult?t für Mathematik und Informatik, FernUniversit?t Hagen, 58084, Hagen, Germany |
| Abstract: | We show that the poset of symmetric idempotents of a (non-commutative) unital ring with involution in the obvious order need not admit finite joins and meets. |
| Keywords: | unital ring involution idempotent symmetric element regular symmetric bilinear form orthogonality adjoint map |
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