Source Notre Dame J.
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- Duality and Definability in First Order Logic;
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Formal Logic , Volume 54, Number 1 , Zentralblatt MATH identifier Subjects Primary: 03B Classical first-order logic. Keywords variadic syntax ellipsis substitution lemma. Alexander, Samuel.
Notre Dame J. Formal Logic 54 , no.
Abstract Article info and citation First page References Abstract We extend first-order logic to include variadic function symbols and prove a substitution lemma. Article information Source Notre Dame J.
On Sahlqvist Formulas in Relevant Logic
Export citation. The descent theorem contains the Beth definability theorem for classical first order logic.
Moreover, it gives, via the standard translation from the language of categories to symbolic logic, a new definability theorem for classical first order logic concerning set-valued functors on models, expressible in purely syntactical arithmetical terms. Included are both research papers and survey papers, giving useful material for experts and students in these fields. Categoricity of theories in L [ko], with [k] a compact cardinal by Saharon Shelah Book 2 editions published in in English and held by 2 WorldCat member libraries worldwide.
Makkai, Mihály [WorldCat Identities]
Accessibly embedding and the solution set condition by Hongde Hu Book 1 edition published in in English and held by 1 WorldCat member library worldwide. Robert L.
Vaught papers by Robert L Vaught in English and held by 1 WorldCat member library worldwide Includes mostly correspondence, course notes for specific classes, and undated general notes. Correspondence includes general incoming correspondence A-Z and specific correspondence from numerous other mathematicians, doctoral students, and advisees alphabetical arrangement.
Course materials for specific courses are organized by class number and date.
Much of the correspondence contains frequent references to mathematical problems and include calculations.