Results 31 to 40 of about 16,571,812 (297)
Expressibility of Higher Order Logics
AbstractWe study the expressive power of higher order logics on finite relational structures or databases. First, we give a characterization of the expressive power of the fragments Σij and πij, for each order i ≥ 2 and each number of alternations of quantifier blocks j. Then we get as a corollary the expressive power of HOi for each order i ≥ 2.
Lauri Hella, Jose Maria Turull Torres
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Topological Completeness for Higher-Order Logic [PDF]
Using recent results in topos theory, two systems of higher-order logic are shown to be complete with respect to sheaf models over topological spaces - so-called "topological semantics". The first is classical higher order logic, with relational quantification of finitely high type; the second system is a predicative fragment thereof with ...
Steven Awodey, Carsten Butz
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Semantics of Separation-Logic Typing and Higher-order Frame Rules for Algol-like Languages [PDF]
We show how to give a coherent semantics to programs that are well-specified in a version of separation logic for a language with higher types: idealized algol extended with heaps (but with immutable stack variables).
Lars Birkedal +2 more
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The Case Against Higher-Order Metaphysics
Although higher-order metaphysics seems prima facie to be a promising new approach to metaphysics, it is nonetheless based on a mistake. This mistake is tied to a misuse of formal languages in metaphysics in general, not just to the use of higher-order ...
Thomas Hofweber
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Light Logics and Higher-Order Processes [PDF]
We show that the techniques for resource control that have been developed by the so-calledlight logicscan be fruitfully applied also to process algebras. In particular, we present a restriction of higher-order π-calculus inspired by soft linear logic. We prove that any soft process terminates in polynomial time.
DAL LAGO, UGO +2 more
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A second order logic of existence [PDF]
Publisher's, offprint versionA. N. Prior in [9] has suggested an approach towards a second order logic of existence where, following medieval logicians, we distinguish “between predicates (like ‘is red’, ‘is hard’, etc.) which entail existence, and ...
Cocchiarella, Nino
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Log-Linear-Based Logic Mining with Multi-Discrete Hopfield Neural Network
Choosing the best attribute from a dataset is a crucial step in effective logic mining since it has the greatest impact on improving the performance of the induced logic.
Gaeithry Manoharam +6 more
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Higher-Order Logic and Disquotational Truth
AbstractTruth predicates are widely believed to be capable of serving a certain logical or quasi-logical function. There is little consensus, however, on the exact nature of this function. We offer a series of formal results in support of the thesis that disquotational truth is a device to simulate higher-order resources in a first-order setting.
Lavinia María Picollo +1 more
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CIFOL: Case-intensional first order logic. (I) Toward a theory of sorts [PDF]
This is Part I of a two-part essay introducing case-intensional first-order logic (CIFOL), an easy-to-use, uniform, powerful, and useful combination of first order logic with modal logic resulting from philosophical and technical modifications of Bressan’
Nuel Belnap +3 more
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Executing Higher Order Logic [PDF]
We report on the design of a prototyping component for the theorem prover Isabelle/HOL. Specifications consisting of datatypes, recursive functions and inductive definitions are compiled into a functional program. Functions and inductively defined relations can be mixed.
Stefan Berghofer, Tobias Nipkow
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