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Commutative subsemigroups of the composition semigroup of formal power series over an integral domain. (English) Zbl 0406.20054
MSC:
20M14 Commutative semigroups
20M10 General structure theory for semigroups
16U10 Integral domains (associative rings and algebras)
16W60 Valuations, completions, formal power series and related constructions (associative rings and algebras)
13G05 Integral domains
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