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Note on α -filters in distributive nearlattices

Ismael Calomino (2019)

Mathematica Bohemica

In this short paper we introduce the notion of α -filter in the class of distributive nearlattices and we prove that the α -filters of a normal distributive nearlattice are strongly connected with the filters of the distributive nearlattice of the annihilators.

Note sur une relation d'intermédiarité dans les treillis

B. Leclerc (1973)

Mathématiques et Sciences Humaines

Nous rapprochons ici une intermédiarité classique dans les treillis, obtenue par une généralisation à partir de la notion d'intervalle d'un ordre total, et la p-analyse, introduite par C. Flament et al. à propos de l'analyse de similitude. Les éléments de cette note doivent être intégrés à un travail sur les graphes dont les arcs sont (partiellement) préordonnés. Au paragraphe 1, nous introduisons deux treillis, dont celui des intervalles généralisés d'un treillis, et nous étudions le lien entre...

Notes on locally internal uninorm on bounded lattices

Gül Deniz Çaylı, Ümit Ertuğrul, Tuncay Köroğlu, Funda Karaçal (2017)

Kybernetika

In the study, we introduce the definition of a locally internal uninorm on an arbitrary bounded lattice L . We examine some properties of an idempotent and locally internal uninorm on an arbitrary bounded latice L , and investigate relationship between these operators. Moreover, some illustrative examples are added to show the connection between idempotent and locally internal uninorm.

Notes on monadic n -valued Łukasiewicz algebras

A. V. Figallo, Inés Pascual, Alicia Ziliani (2004)

Mathematica Bohemica

A topological duality for monadic n -valued Łukasiewicz algebras introduced by M. Abad (Abad, M.: Estructuras cíclica y monádica de un álgebra de Łukasiewicz n -valente. Notas de Lógica Matemática 36. Instituto de Matemática. Universidad Nacional del Sur, 1988) is determined. When restricted to the category of Q -distributive lattices and Q -homomorphims, it coincides with the duality obtained by R. Cignoli in 1991. A new characterization of congruences by means of certain closed and involutive subsets...

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