Coinductive Foundations of Infinitary Rewriting and Infinitary Equational Logic [PDF]
We present a coinductive framework for defining and reasoning about the infinitary analogues of equational logic and term rewriting in a uniform, coinductive way.
Jörg Endrullis +4 more
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Omitting Types in Fragments and Extensions of First Order Logic [PDF]
Fix \(2 < n < \omega\). Let \(L_n\) denote first order logic restricted to the first n variables. Using the machinery of algebraic logic, positive and negative results on omitting types are obtained for \(L_n\) and for infinitary variants and extensions ...
Tarek Sayed Ahmed
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Encoding many-valued logic in $\lambda$-calculus [PDF]
We will extend the well-known Church encoding of Boolean logic into $\lambda$-calculus to an encoding of McCarthy's $3$-valued logic into a suitable infinitary extension of $\lambda$-calculus that identifies all unsolvables by $\bot$, where $\bot$ is a ...
Fer-Jan de Vries
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Finitary Simulation of Infinitary $\beta$-Reduction via Taylor Expansion, and Applications [PDF]
Originating in Girard's Linear logic, Ehrhard and Regnier's Taylor expansion of $\lambda$-terms has been broadly used as a tool to approximate the terms of several variants of the $\lambda$-calculus. Many results arise from a Commutation theorem relating
Rémy Cerda, Lionel Vaux Auclair
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Quantifying over Boolean announcements [PDF]
Various extensions of public announcement logic have been proposed with quantification over announcements. The best-known extension is called arbitrary public announcement logic, APAL.
Hans van Ditmarsch, Tim French
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Circular Proofs as Session-Typed Processes: A Local Validity Condition [PDF]
Proof theory provides a foundation for studying and reasoning about programming languages, most directly based on the well-known Curry-Howard isomorphism between intuitionistic logic and the typed lambda-calculus.
Farzaneh Derakhshan, Frank Pfenning
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“Mathematics is the Logic of the Infinite”: Zermelo’s Project of Infinitary Logic
In this paper I discuss Ernst Zermelo’s ideas concerning the possibility of developing a system of infinitary logic that, in his opinion, should be suitable for mathematical inferences. The presentation of Zermelo’s ideas is accompanied with some remarks
Pogonowski Jerzy
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The Topology-Free Construction of the Universal Type Structure for Conditional Probability Systems [PDF]
We construct the universal type structure for conditional probability systems without any topological assumption, namely a type structure that is terminal, belief-complete, and non-redundant.
Pierfrancesco Guarino
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A Finite-Model-Theoretic View on Propositional Proof Complexity [PDF]
We establish new, and surprisingly tight, connections between propositional proof complexity and finite model theory. Specifically, we show that the power of several propositional proof systems, such as Horn resolution, bounded-width resolution, and the ...
Erich Grädel +3 more
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A Coalgebraic Approach to Dualities for Neighborhood Frames [PDF]
We develop a uniform coalgebraic approach to J\'onsson-Tarski and Thomason type dualities for various classes of neighborhood frames and neighborhood algebras.
Guram Bezhanishvili +2 more
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