Abstract
This paper collects some results from [AFM] and from [AM]. Our purpose is to illustrate some interesting classes of algebras which generate the whole variety of BL-algebras. In particular, we prove that such variety is generated by its finite members and by the class of finite ordinal sums of Lukasiewicz t-norm algebras. Finally, we characterize the BL-chains which generate the whole variety of BL-algebras.
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Aglianó, P., Ferreirim, I.M.A., Montagna, F. (2001) Basic hoops: an algebraic study of continuous t-norms, (preprint)
Aglianó, P., Montagna, F. (2003) Varieties of BL-algebras I: general properties. J Pure Appl Algebra 181:105–129
Aglianò, P., Ursini, A. (1997) On subtractive varieties III: From ideals to congruences. Algebra Universalis 37:296–333
Blok, W.J., Ferreirim, I.M.A. (2000) On the structure of hoops. Algebra Universalis 43:233–257
Blok, W., Pigozzi, D. (1989) Algebraizable Logics. Mem Am Math Soc 77:396
Busaniche, M. (2002) Decompositions of BL-chains, Preprint University of Buenos Aires
Chang, C.C. (1958) Algebraic analysis of: many-valued logic. Trans Am Math Soc 88: 467–490
Cignoli, R., Esteva, F., Godo, L., Torrens, A. (2000) Basic fuzzy logic is the logic of continuous t-norms and their residua. Soft Comput 4:106–112
Cignoli, R., Mundici, D., D'Ottaviano, I.M.L. (2000) Algebraic foundations of many-valued reasoning. Kluwer, Dordercht
Ferreirim, I.M.A. (1992) On varieties and quasi varieties of hoops and their reducts. PhD Thesis, University of Illinois at Chicago
Gumm, P., Ursini, A. (1984) Ideals in Universal Algebra. Algebra Universalis 19:45–54
Hájek, P. (1998) Metamathematics of Fuzzy Logic. Trends in Logic, Studia Logica Library no. 4. Kluwer Dordercht/ Boston/ London
Harrop, R. (1958) On the existence of finite models and decision procedures for propositional calculi. Proc Cambridge Philos Soc 58:1–13
Laskowski, L.C., Shashoua, Y.V. (2002) A classification of BL-algebras. Fuzzy Sets Sys 131:271–282
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Montagna, F. Generating the variety of BL-algebras. Soft Comput 9, 869–874 (2005). https://doi.org/10.1007/s00500-004-0450-z
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DOI: https://doi.org/10.1007/s00500-004-0450-z