Now showing items 21-22 of 22
Supertropical semirings and supervaluations
[OWP-2010-05] (Mathematisches Forschungsinstitut Oberwolfach, 2010)
We interpret a valuation $\upsilon$ on a ring $R$ as a map $\upsilon:R \rightarrow M$ into a so called bipotent semiring $M$ (the usual max-plus setting), and then define a supervaluation $\varphi$ as a suitable map into ...
Representation Theory of Non-Commutative Association Schemes of Order
[OWP-2010-07] (Mathematisches Forschungsinstitut Oberwolfach, 2010-03-11)
In this note, we investigate association schemes of order 6. We prove that non-normal closed subsets of such schemes have order 2 and that normal closed subsets of non-commutative schemes have order 2 or 3. After that, ...