Results 11 to 20 of about 428,865 (120)

Orthomodular and Skew Orthomodular Posets [PDF]

open access: yes, 2023
We present the smallest non-lattice orthomodular poset and show that it is unique up to isomorphism. Since not every Boolean poset is orthomodular, we consider the class of skew orthomodular posets previously introduced by the first and third author ...
Kolařík, Miroslav; orcid:   +2 more
core   +2 more sources

The paraunitary group of a von Neumann algebra

open access: yesBulletin of the London Mathematical Society, Volume 54, Issue 4, Page 1220-1231, August 2022., 2022
Abstract It is proved that the pure paraunitary group over a von Neumann algebra coincides with the structure group of its projection lattice. The structure group of an arbitrary orthomodular lattice (OML) is a group with a right invariant lattice order, and as such it is known to be a complete invariant of the OML.
Carsten Dietzel, Wolfgang Rump
wiley   +1 more source

Monadic Effect Algebras

open access: yesJournal of Mathematics, Volume 2022, Issue 1, 2022., 2022
The main goal of this paper is to introduce and investigate the related theory on monadic effect algebras. First, we design the axiomatic system of existential quantifiers on effect algebras and then use it to give the definition of the universal quantifier and monadic effect algebras.
Yuxi Zou, Xiaolong Xin, Li Guo
wiley   +1 more source

Negative Translations of Orthomodular Lattices and Their Logic [PDF]

open access: yes, 2021
We introduce residuated ortholattices as a generalization of—and environment for the investigation of—orthomodular lattices. We establish a number of basic algebraic facts regarding these structures, characterize orthomodular lattices as those residuated
Fussner, Daniel, St. John, Gavin
core   +2 more sources

Generalized Rough Sets via Quantum Implications on Quantum Logic

open access: yesAxioms, 2021
This paper introduces some new concepts of rough approximations via five quantum implications satisfying Birkhoff–von Neumann condition. We first establish rough approximations via Sasaki implication and show the equivalence between distributivity of ...
Songsong Dai
doaj   +1 more source

Between quantum logic and concurrency [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
We start from two closure operators defined on the elements of a special kind of partially ordered sets, called causal nets. Causal nets are used to model histories of concurrent processes, recording occurrences of local states and of events. If every
Luca Bernardinello   +2 more
doaj   +1 more source

Orthomodular Lattices Induced by the Concurrency Relation [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2009
We apply to locally finite partially ordered sets a construction which associates a complete lattice to a given poset; the elements of the lattice are the closed subsets of a closure operator, defined starting from the concurrency relation. We show that,
Luca Bernardinello   +2 more
doaj   +1 more source

Towards a Paraconsistent Quantum Set Theory [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2015
In this paper, we will attempt to establish a connection between quantum set theory, as developed by Ozawa, Takeuti and Titani, and topos quantum theory, as developed by Isham, Butterfield and Döring, amongst others.
Benjamin Eva
doaj   +1 more source

On the properties of spectral effect algebras [PDF]

open access: yesQuantum, 2019
The aim of this paper is to show that there can be either only one or uncountably many contexts in any spectral effect algebra, answering a question posed in [S. Gudder, Convex and Sequential Effect Algebras, (2018), arXiv:1802.01265].
Anna Jenčová, Martin Plávala
doaj   +1 more source

Quantum-Inspired Uncertainty Quantification

open access: yesFrontiers in Computer Science, 2022
Reasonable quantification of uncertainty is a major issue of cognitive infocommunications, and logic is a backbone for successful communication. Here, an axiomatic approach to quantum logic, which highlights similarity to and differences to classical ...
Günther Wirsching
doaj   +1 more source

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