Results 91 to 100 of about 945 (231)

Boundary Algebra: A Simple Notation for Boolean Algebra and the Truth Functors [PDF]

open access: yes
Boundary algebra [BA] is a simpler notation for Spencer-Brown’s (1969) primary algebra [pa], the Boolean algebra 2, and the truth functors. The primary arithmetic [PA] consists of the atoms ‘()’ and the blank page, concatenation, and enclosure between ‘(‘
Philip Meguire
core  

Boolean algebras with no rigid or homogeneous factors

open access: yes, 1982
A simple construction of Boolean algebras with no rigid or homogeneous factors is described. It is shown that for every uncountable cardinal κ \kappa there are 2 κ {2^\kappa ...
Petr Štěpánek
core   +1 more source

Infrared Machine Vision System Based on Te NWs‐Au NPs Plasmonic Optoelectronic Memristor for Motion Detection

open access: yesAdvanced Science, Volume 13, Issue 20, 9 April 2026.
A plasmonic optoelectronic memristor based on Te nanowires‐Au nanoparticles/ι‐carrageenan enables IR‐programmed and visiblelight‐erased non‐volatile conductance. The all‐photonic write/erase scheme supports in‐sensor logic and real‐time motion detection in darkness.
Jingyao Bian   +7 more
wiley   +1 more source

Necessary and Sufficient Conditions in Trust Development Over Time: Understanding the Borrower–Lender Relationship

open access: yesBritish Journal of Management, Volume 37, Issue 2, April 2026.
Abstract We explore configurations of sufficient and necessary conditions for the evolution and resilience of borrower trust in their lenders. Because trust is a dynamic phenomenon that needs to be understood in terms of change over time, we rely on longitudinal data collected from managers of small‐ and medium‐sized enterprises (SME) who are clients ...
Andrea Moro   +2 more
wiley   +1 more source

A characterization of complete atomic Boolean algebras

open access: yes, 1977
In this note we give a characterization of complete atomic Boolean algebras by means of complete atomic lattices. We find that unicity of the representation of the maximum as union of atoms and Lambda-infinite distributivity law are necessary and ...
Esteva, Francisco
core  

A note on ultraproducts of complete boolean algebras

open access: yesJournal of Pure and Applied Algebra, 1985
In J. Pure Appl. Algebra 32, 11-20 (1984; Zbl 0539.13003), the author asserted that ultraproducts of Boolean algebras, whose cardinalities are approaching the first measurable cardinal k, over an index set of cardinality at least k, are necessarily incomplete.
openaire   +2 more sources

Weak elimination of imaginaries for Boolean algebras

open access: yes, 2005
We give a complete characterization of Boolean algebras admitting weak elimination of imaginaries in terms of elementary ...
Wencel, Roman
core   +1 more source

Boolean Partition Algebras

open access: yes, 2013
A Boolean partition algebra is a pair $(B,F)$ where $B$ is a Boolean algebra and $F$ is a filter on the semilattice of partitions of $B$ where $\bigcup F=B\setminus\{0\}$.
Van Name, Joseph   +1 more
core  

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