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Mathematical logic, algebra and number theory
Isomorphisms of semirings of continuous nonnegative functions with max-addition and isomorphisms of lattices of their subalgebras
V. V. Sidorov Vyatka State University, 36, Moskovskaya str., Kirov, 610000, Russia
Abstract:
Let $\mathbb{R}^{\vee}_+$ be the semifield with zero of nonnegative real numbers with operations of max-addition and multiplication and $C^{\vee}(X)$ be the semiring of continuous $\mathbb{R}^{\vee}_+$-valued functions on an arbitrary topological space $X$ with pointwise operation max-addition and multiplication. We call a subset $A\subseteq C^{\vee}(X)$ a subalgebra of the semiring $C^{\vee}(X)$ if $f\vee g,$ $fg,$ $rf\in A$ for any $f, g\in A$ and $r\in\mathbb{R}^{\vee}_+.$ For arbitrary topological spaces $X$ and $Y,$ we describe isomorphisms of the lattices of subalgebras (subalgebras with unity) of the semirings $C^{\vee}(X)$ and $C^{\vee}(Y).$
Keywords:
semirings of continuous functions, subalgebra, isomorphism, lattice of subalgebras, Hewitt space, max-addition.
Received November 10, 2019, published March 5, 2020
Citation:
V. V. Sidorov, “Isomorphisms of semirings of continuous nonnegative functions with max-addition and isomorphisms of lattices of their subalgebras”, Sib. Èlektron. Mat. Izv., 17 (2020), 318–337
Linking options:
https://www.mathnet.ru/eng/semr1215 https://www.mathnet.ru/eng/semr/v17/p318
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Abstract page: | 252 | Full-text PDF : | 133 | References: | 18 |
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