Abstract
An integral subresiduated lattice ordered commutative monoid (or integral srl-monoid for short) is a pair \(({\textbf {A}},Q)\) where \({\textbf {A}}=(A,\wedge ,\vee ,\cdot ,1)\) is a lattice ordered commutative monoid, 1 is the greatest element of the lattice \((A,\wedge ,\vee )\) and Q is a subalgebra of A such that for each \(a,b\in A\) the set \(\{q \in Q: a \cdot q \le b\}\) has maximum, which will be denoted by \(a\rightarrow b\). The integral srl-monoids can be regarded as algebras \((A,\wedge ,\vee ,\cdot ,\rightarrow ,1)\) of type (2, 2, 2, 2, 0). Furthermore, this class of algebras is a variety which properly contains the varieties of integral commutative residuated lattices and subresiduated lattices respectively. In this paper we study the quasivariety of \(\{\wedge ,\cdot ,\rightarrow ,1\}\)-subreducts of integral srl-monoids, which will be denoted by \(\mathsf {SR^s}\). In particular, we show that \(\mathsf {SR^s}\) is a variety. We also characterize simple and subdirectly irreducible algebras of \(\mathsf {SR^s}\) respectively. Finally, through a Hilbert style system, we present a logic which has as algebraic semantics the variety \(\mathsf {SR^s}\) and we apply this result in order to present an expansion of the previous logic which has as algebraic semantics the variety of integral srl-monoids.
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Acknowledgements
This work was supported by Consejo Nacional de Investigaciones Científicas y Técnicas (PIP 11220170100195CO and PIP 11220200100912CO, CONICET-Argentina), Universidad Nacional del Sur (PGI24/LZ18), Universidad Nacional de La Plata (11X/921) and Agencia Nacional de Promoción Científica y Tecnológica (PICT2019-2019-00882, ANPCyT-Argentina).
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Cornejo, J.M., San Martín, H.J. & Sígal, V. On a Class of Subreducts of the Variety of Integral srl-Monoids and Related Logics. Stud Logica (2023). https://doi.org/10.1007/s11225-023-10074-1
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DOI: https://doi.org/10.1007/s11225-023-10074-1