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José M. Sagüillo [8]José Miguel Sagüillo [6]
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  1. The Absence of Multiple Universes of Discourse in the 1936 Tarski Consequence-Definition Paper.John Corcoran & José Miguel Sagüillo - 2011 - History and Philosophy of Logic 32 (4):359 - 374.
    This paper discusses the history of the confusion and controversies over whether the definition of consequence presented in the 11-page 1936 Tarski consequence-definition paper is based on a monistic fixed-universe framework?like Begriffsschrift and Principia Mathematica. Monistic fixed-universe frameworks, common in pre-WWII logic, keep the range of the individual variables fixed as the class of all individuals. The contrary alternative is that the definition is predicated on a pluralistic multiple-universe framework?like the 1931 Gödel incompleteness paper. A pluralistic multiple-universe framework recognizes multiple (...)
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  2. Logical Consequence Revisited.José M. Sagüillo - 1997 - Bulletin of Symbolic Logic 3 (2):216-241.
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    Methodological Practice and Complementary Concepts of Logical Consequence: Tarski's Model-Theoretic Consequence and Corcoran's Information-Theoretic Consequence.José M. Sagüillo - 2009 - History and Philosophy of Logic 30 (1):21-48.
    This article discusses two coextensive concepts of logical consequence that are implicit in the two fundamental logical practices of establishing validity and invalidity for premise-conclusion arguments. The premises and conclusion of an argument have information content (they ?say? something), and they have subject matter (they are ?about? something). The asymmetry between establishing validity and establishing invalidity has long been noted: validity is established through an information-processing procedure exhibiting a step-by-step deduction of the conclusion from the premise-set. Invalidity is established by (...)
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    Domains of Sciences, Universes of Discourse and Omega Arguments.Jose M. Saguillo - 1999 - History and Philosophy of Logic 20 (3-4):267-290.
    Each science has its own domain of investigation, but one and the same science can be formalized in different languages with different universes of discourse. The concept of the domain of a science and the concept of the universe of discourse of a formalization of a science are distinct, although they often coincide in extension. In order to analyse the presuppositions and implications of choices of domain and universe, this article discusses the treatment of omega arguments in three very different (...)
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  5. Conceptions of Logical Implication.José M. Sagüillo - 2002 - Logica Trianguli 6:41-67.
    This is a survey paper of approaches to the concept of logical implication. Roughly stated the main motivation of these approaches is to provide a necessary and sufficient condition for a set of propositions to logically imply a single proposition. In regard to their affinities these approaches are grouped into two: the transformational conception and the informational conception. Some approaches in each conception are philosophical and some are mathematical in character, their common assumption being that they reflect a previous intuition (...)
     
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  6. Current Topics in Logic and Analytic Philosophy/Temas Actuales de Lógica y Filosofía Analítica.José Luis Falguera, Concha Martínez & José Miguel Sagüillo (eds.) - 2005 - University of Santiago de Compostela.
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  7. El Movimiento Anti-Metafísico Del Siglo Veinte.Rom Harré & José Miguel Sagüillo - 2000
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  8.  20
    Current Topics in Logic and Analytic Philosophy =.Concha Martínez, José L. Falguera & José M. Sagüillo (eds.) - 2007 - Universidade de Santiago de Compostela.
    Temas actuales de Lógica y Filosofía Analítica 143 John Corcoran Notes on the Founding of Logics and Metalogic: Aristotle, Boole, and Tarski 177 Ignacio ...
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