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L -fuzzy ideal degrees in effect algebras

Xiaowei Wei, Fu Gui Shi (2022)

Kybernetika

In this paper, considering L being a completely distributive lattice, we first introduce the concept of L -fuzzy ideal degrees in an effect algebra E , in symbol 𝔇 e i . Further, we characterize L -fuzzy ideal degrees by cut sets. Then it is shown that an L -fuzzy subset A in E is an L -fuzzy ideal if and only if 𝔇 e i ( A ) = , which can be seen as a generalization of fuzzy ideals. Later, we discuss the relations between L -fuzzy ideals and cut sets ( L β -nested sets and L α -nested sets). Finally, we obtain that the L -fuzzy...

La créativité des définitions dans les systèmes para-euclidiens

Jean-Pierre Ginisti (1991)

Mathématiques et Sciences Humaines

Cet article considère trois sortes de calcul propositionnel (mais surtout la troisième), à la fois d'un point de vue logique et d'un point de vue épistémologique : (1) les systèmes classiques qui ont les propriétés suivantes : (a) chaque axiome doit contenir seulement (ou doit être compris comme contenant seulement) des termes primitifs, (b) chaque définition est métalinguistique, (c) chaque définition est non créatrice ; (2) les systèmes de Leśnieswski qui satisfont (a) mais ni (b) ni (c), une...

Lattice of ℤ-module

Yuichi Futa, Yasunari Shidama (2016)

Formalized Mathematics

In this article, we formalize the definition of lattice of ℤ-module and its properties in the Mizar system [5].We formally prove that scalar products in lattices are bilinear forms over the field of real numbers ℝ. We also formalize the definitions of positive definite and integral lattices and their properties. Lattice of ℤ-module is necessary for lattice problems, LLL (Lenstra, Lenstra and Lovász) base reduction algorithm [14], and cryptographic systems with lattices [15] and coding theory [9]....

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