2013
DOI: 10.1007/s00012-013-0224-5
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Many-sorted and single-sorted algebras

Abstract: Abstract. This paper specifies a detailed, fully type-based general method for translating the class of all pure, many-sorted algebras of a given constant-free type into an equivalent variety of single-sorted algebras of defined, constant-free type. The complexity of the identities defining the variety is a linear function of the number of sorts and the arity of the fundamental operations.

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Cited by 6 publications
(4 citation statements)
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“…A precursors of P appears in [2] (see also the last section of [11]). Recently, the functor P was applied by Mučka, Romanowska, and Smith [19] to find good sets of explicit defining identities and quasi-identities for the variety of single-sorted algebras equivalent to the class of all multisorted algebras of a given language where either all sorts are nonempty or all sorts are empty. Freese and McMenzie [9] used a variant of the construction provided by the functor C to associate modules (over appropriate rings) to abelian congruences of algebras in a congruence modular variety, which has played a prominent role in commutator theory for over three decades.…”
Section: Introductionmentioning
confidence: 99%
“…A precursors of P appears in [2] (see also the last section of [11]). Recently, the functor P was applied by Mučka, Romanowska, and Smith [19] to find good sets of explicit defining identities and quasi-identities for the variety of single-sorted algebras equivalent to the class of all multisorted algebras of a given language where either all sorts are nonempty or all sorts are empty. Freese and McMenzie [9] used a variant of the construction provided by the functor C to associate modules (over appropriate rings) to abelian congruences of algebras in a congruence modular variety, which has played a prominent role in commutator theory for over three decades.…”
Section: Introductionmentioning
confidence: 99%
“…One can cite for instance, application areas such as multisorted algebras (also called many sorted algebras) [5], hidden algebra [6,7], ordered sorted algebra [8]. But other algebraic concepts have also been introduced with quite a different description of their structures as the coalgebras [9].…”
Section: Introductionmentioning
confidence: 99%
“…Recent paper [7] proves that a category of many-sorted algebras on pure sets (Definition 2.8 below) is categorically equivalent to a category of single-sorted algebras. In this paper, we consider on the case of varieties.…”
Section: Introductionmentioning
confidence: 99%
“…Definition 2.9 (cf. [7,Definition 3.1]). The following single-sorted <κ-ary clone C DS is called the clone corresponds to the variety of diagonal algebras of degree S:…”
mentioning
confidence: 99%