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On Implicative and Positive Implicative GE Algebras [PDF]

open access: yesBulletin of the Section of Logic, 2023
GE algebras (generalized exchange algebras), transitive GE algebras (tGE algebras, for short) and aGE algebras (that is, GE algebras verifying the antisymmetry) are a generalization of Hilbert algebras. Here some properties and characterizations of these
Andrzej Walendziak
doaj   +3 more sources

General Implicativity in Groupoids

open access: yesMathematics, 2018
There are several equivalent axioms, which can be used to characterize the positive implicativity in B C K -algebras. In this paper, we investigate interrelationships among such axioms in a more general setting of groupoids, and several aspects ...
Feng Feng, Hee Sik Kim, Joseph Neggers
doaj   +2 more sources

On Pre-Hilbert and Positive Implicative Pre-Hilbert Algebras

open access: yesBulletin of the Section of Logic
In the paper, pre-Hilbert algebras are defined as a generalization of Hilbert algebras (namely, a Hilbert algebra is just a pre-Hilbert algebra satisfying the property of antisymmetry).
Andrzej Walendziak
doaj   +1 more source

On Involutive Weak Exchange Algebras

open access: yesBulletin of the Section of Logic
In this paper, involutive weak exchange algebras (for short, involutive WE algebras) are introduced and studied. Their properties and characterizations are investigated. Some important results and examples are given.
Andrzej Walendziak
doaj   +1 more source
Some of the next articles are maybe not open access.

Evolving standards of care and new challenges in the management of HER2‐positive breast cancer

Ca-A Cancer Journal for Clinicians, 2020
Ciara O'Sullivan   +2 more
exaly  

Effectiveness of positive psychology interventions: a systematic review and meta-analysis

Journal of Positive Psychology, 2021
Olwyn Mooney, Alan Carr
exaly  

Positive Emotions at Work

Annual Review of Organizational Psychology and Organizational Behavior, 2020
Ed Diener, Louis Tay
exaly  

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