A Fixed Point Theorem for Local Pseudo-Contractions in Uniformly Convex Spaces.
W.A. Kirk (1979/80)
Manuscripta mathematica
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W.A. Kirk (1979/80)
Manuscripta mathematica
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G. Ananda Swarup (1971)
Mathematische Zeitschrift
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K. Orlov, M. Stojanović (1974)
Matematički Vesnik
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H. B. Potoczny (1984)
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Takao Akahori (1989)
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Takao Akahori (1992)
Journal für die reine und angewandte Mathematik
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Rajab Ali Borzooei, Arsham Borumand Saeid, Akbar Rezaei, Akefe Radfar, Reza Ameri (2013)
Discussiones Mathematicae - General Algebra and Applications
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In this paper, we introduce the notion of pseudo BE-algebra which is a generalization of BE-algebra. We define the concepts of pseudo subalgebras and pseudo filters and prove that, under some conditions, pseudo subalgebra can be a pseudo filter. We prove that every homomorphic image and pre-image of a pseudo filter is also a pseudo filter. Furthermore, the notion of pseudo upper sets in pseudo BE-algebras introduced and is proved that every pseudo filter is an union of pseudo upper sets. ...
Grzegorz Dymek (2015)
Discussiones Mathematicae - General Algebra and Applications
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The notions of a period of an element of a pseudo-BCI-algebra and a periodic pseudo-BCI-algebra are defined. Some of their properties and characterizations are given.
Akbar Rezaei, Arsham Borumand Saeid, Andrzej Walendziak (2017)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
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The notions of a dual pseudo-Q algebra and a dual pseudo-QC algebra are introduced. The properties and characterizations of them are investigated. Conditions for a dual pseudo-Q algebra to be a dual pseudo-QC algebra are given. Commutative dual pseudo-QC algebras are considered. The interrelationships between dual pseudo-Q/QC algebras and other pseudo algebras are visualized in a diagram.
Young Bae Jun, Hee Sik Kim, J. Neggers (2006)
Matematički Vesnik
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Pap, Endre, Ralević, Nebojša M. (1999)
Novi Sad Journal of Mathematics
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Jaak Peetre (1982)
Studia Mathematica
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