Results 41 to 50 of about 387 (145)

Free Algebras in Von Neumann-Bernays-Gӧdel Set Theory and Positive Elementary Inductions in Reasonable Structures [PDF]

open access: yes, 1978
This thesis consists of two independent chapters. The first chapter deals with universal algebra. It is shown, in von Neumann-Bernays-Gӧdel set theory, that free images of partial algebras exist in arbitrary varieties.
Rubin, Arthur Leonard
core   +1 more source

On cohomology of locally profinite sets

open access: yesProceedings of the London Mathematical Society, Volume 132, Issue 5, May 2026.
Abstract We construct a locally profinite set of cardinality ℵω$\aleph _{\omega }$ with infinitely many first cohomology classes of which any distinct finite product does not vanish. Building on this, we construct the first example of a nondescendable faithfully flat map between commutative rings of cardinality ℵω$\aleph _{\omega }$ within Zermelo ...
Ko Aoki
wiley   +1 more source

On the structure of numerical event spaces [PDF]

open access: yes, 2010
summary:The probability $p(s)$ of the occurrence of an event pertaining to a physical system which is observed in different states $s$ determines a function $p$ from the set $S$ of states of the system to $[0,1]$.
Länger, Helmut   +2 more
core   +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

Radical classes of Boolean algebras

open access: yes, 1974
This thesis obtains information about Boolean algebras by means of the radical concept. One group of results revolves about the concept, theorems, and constructions of general radical theory.
Galay, Theodore Alexander
core  

Attribute Implication Bases From Galois Connection Structures

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 4, Page 2729-2753, 15 March 2026.
ABSTRACT Modeling knowledge systems by determining relationships among key variables have been and currently is a fundamental and nontrivial challenge in real‐world scenarios. Many approaches have been developed to reach this goal, but many of them are heuristic and require of alternative procedures to provide robust and tractable rules.
M. Eugenia Cornejo   +2 more
wiley   +1 more source

AN INTRODUCTION TO BOOLEAN ALGEBRAS

open access: yes, 2016
This thesis discusses the topic of Boolean algebras. In order to build intuitive understanding of the topic, research began with the investigation of Boolean algebras in the area of Abstract Algebra. The content of this initial research used a particular
Schardijn, Amy, Snowden, Andrew
core  

Boolean-linear spaces

open access: yes, 1990
We introduce an abstract theory that provides a unified treatment of various structures and spaces occurring in both logic and analysis. The theory, called Boolean-linear spaces, is formulated in terms of partially ordered sets.
Jech, Thomas
core   +1 more source

Emergence in exact natural science [PDF]

open access: yes, 1998
The context of an operational description is given by the distinction between what we consider as relevant and what as irrelevant for a particular experiment or observation.
Primas, Hans
core  

Semisimple Algebras of Infinite Valued Logic and Bold Fuzzy Set Theory

open access: yes, 1986
In classical two-valued logic there is a three way relationship among formal systems, Boolean algebras and set theory. In the case of infinite-valued logic we have a similar relationship among formal systems, MV-algebras and what is called Bold fuzzy set
L. P. Belluce
core   +1 more source

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