Results 11 to 20 of about 6,236,903 (286)

Frege’s Theory of Types

open access: yesManuscrito, 2023
It is often claimed that the theory of function levels proposed by Frege in Grundgesetze der Arithmetik anticipates the hierarchy of types that underlies Church’s simple theory of types.
Bruno Bentzen
doaj   +3 more sources

AGAINST CUMULATIVE TYPE THEORY [PDF]

open access: yesThe Review of Symbolic Logic, 2021
AbstractStandard Type Theory, ${\textrm {STT}}$ , tells us that $b^n(a^m)$ is well-formed iff $n=m+1$ . However, Linnebo and Rayo [23] have advocated the use of Cumulative Type Theory, $\textrm {CTT}$ , which has more relaxed type-restrictions: according to $\textrm {CTT}$ , $b^\beta (a^\alpha )$ is well-formed iff $\beta>\alpha $ . In this
Trueman, Rob, Button, Tim
openaire   +5 more sources

Type Theory with Opposite Types: A Paraconsistent Type Theory

open access: yesLogic Journal of the IGPL, 2021
Abstract A version of intuitionistic type theory is extended with opposite types, allowing a different formalization of negation and obtaining a paraconsistent type theory ($\textsf{PTT} $). The rules for opposite types in $\textsf{PTT} $ are based on the rules of the so-called constructible falsity.
Juan C Agudelo-Agudelo   +1 more
openaire   +1 more source

Semantics for Combinatory Logic With Intersection Types

open access: yesFrontiers in Computer Science, 2022
There is a plethora of semantics of computational models, nevertheless, the semantics of combinatory logic are among the less investigated ones. In this paper, we propose semantics for the computational system of combinatory logic with intersection types.
Silvia Ghilezan   +2 more
doaj   +1 more source

Dynamic Semiosis: Meaning, Informing, and Conforming in Constructing the Past

open access: yesInformation, 2023
Constructed Past Theory (CPT) is an abstract representation of how information about the past is produced and interpreted. It is grounded in the assertion that whatever we can write or say about anything in the past is the product of cognition ...
Kenneth Thibodeau
doaj   +1 more source

Type theory in type theory using quotient inductive types [PDF]

open access: yesACM SIGPLAN Notices, 2016
We present an internal formalisation of a type heory with dependent types in Type Theory using a special case of higher inductive types from Homotopy Type Theory which we call quotient inductive types (QITs). Our formalisation of type theory avoids referring to preterms or a typability relation but defines directly well typed objects by an inductive ...
Altenkirch, Thorsten, Kaposi, Ambrus
openaire   +2 more sources

Call-by-name Gradual Type Theory [PDF]

open access: yesLogical Methods in Computer Science, 2020
We present gradual type theory, a logic and type theory for call-by-name gradual typing. We define the central constructions of gradual typing (the dynamic type, type casts and type error) in a novel way, by universal properties relative to new judgments
Max S. New, Daniel R. Licata
doaj   +1 more source

Constructive Type Theory

open access: yesAl-Lisaniyyat, 2022
The aim of our paper is to present the Constructive Type Theory (CTT) and some related concepts for the Swedish logician Per Martin Löf, who constructed a formal logic system in order to establish a philosophical foundation of constructive mathematics ...
Terkia Mechouet, Farid Zidani
doaj   +1 more source

2-adjoint equivalences in homotopy type theory [PDF]

open access: yesLogical Methods in Computer Science, 2021
We introduce the notion of (half) 2-adjoint equivalences in Homotopy Type Theory and prove their expected properties. We formalized these results in the Lean Theorem Prover.
Daniel Carranza   +3 more
doaj   +1 more source

Multi-level Contextual Type Theory [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2011
Contextual type theory distinguishes between bound variables and meta-variables to write potentially incomplete terms in the presence of binders. It has found good use as a framework for concise explanations of higher-order unification, characterize ...
Mathieu Boespflug, Brigitte Pientka
doaj   +1 more source

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