Zusammenfassung
We interpret a valuation nu on a ring R as a map nu : R -> M into a so-called bipotent semiring M (the usual max-plus setting), and then define a supervaluation phi as a suitable map into a supertropical semiring U with ghost ideal M (cf. Izhakian and Rowen (2010, in press) [8,9]) covering nu via the ghost map U -> M. The set Cov(nu) of all supervaluations covering nu has a natural ordering which ...
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