Free products and elementary types of Boolean Algebras.
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Philip Olin (1976)
Mathematica Scandinavica
Erik Ellentuck (1977)
Czechoslovak Mathematical Journal
Rajab Ali Borzooei, Akbar Paad (2013)
Discussiones Mathematicae - General Algebra and Applications
In this paper, we introduce the notion of fuzzy n-fold integral filter in BL-algebras and we state and prove several properties of fuzzy n-fold integral filters. Using a level subset of a fuzzy set in a BL-algebra, we give a characterization of fuzzy n-fold integral filters. Also, we prove that the homomorphic image and preimage of fuzzy n-fold integral filters are also fuzzy n-fold integral filters. Finally, we study the relationship among fuzzy n-fold obstinate filters, fuzzy n-fold integral filters...
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