Results 11 to 20 of about 22,057,611 (283)

Stateful Realizers for Nonstandard Analysis [PDF]

open access: yesLogical Methods in Computer Science, 2023
In this paper we propose a new approach to realizability interpretations for nonstandard arithmetic. We deal with nonstandard analysis in the context of (semi)intuitionistic realizability, focusing on the Lightstone-Robinson construction of a model for ...
Bruno Dinis, Étienne Miquey
doaj   +10 more sources

Grilliot's trick in Nonstandard Analysis [PDF]

open access: yesLogical Methods in Computer Science, 2017
The technique known as Grilliot's trick constitutes a template for explicitly defining the Turing jump functional $(\exists^2)$ in terms of a given effectively discontinuous type two functional. In this paper, we discuss the standard extensionality trick:
Sam Sanders
doaj   +4 more sources

The computational content of Nonstandard Analysis [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2016
Kohlenbach's proof mining program deals with the extraction of effective information from typically ineffective proofs. Proof mining has its roots in Kreisel's pioneering work on the so-called unwinding of proofs.
Sam Sanders
doaj   +8 more sources

Mechanizing Nonstandard Real Analysis [PDF]

open access: yesLMS Journal of Computation and Mathematics, 2000
AbstractThis paper first describes the construction and use of the hyperreals in the theorem-prover Isabelle within the framework of higher-order logic (HOL). The theory, which includes infinitesimals and infinite numbers, is based on the hyperreal number system developed by Abraham Robinson in his nonstandard analysis (NSA).
Jacques D. Fleuriot, Lawrence C. Paulson
openaire   +4 more sources

A New Approach to Nonstandard Analysis [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
In this paper, we propose a new approach to nonstandard analysis without using the ultrafilters. This method is very simple in practice. Moreover, we construct explicitly the total order relation in the new field of the infinitesimal numbers.
Saghe Abdeljalil
doaj   +3 more sources

Forcing in nonstandard analysis [PDF]

open access: yesAnnals of Pure and Applied Logic, 1994
The results and methods in this paper could lead to a significant improvement within the discipline of nonstandard analysis. A nonstandard universe is constructed from a superstructure in a Boolean-valued model of set theory. Much of this paper is taken up with such a construction and showing how this construction's properties compare with those of the
Ozawa, Masanao
openaire   +4 more sources

On Some Types of Functions in Nonstandard Analysis [PDF]

open access: yesScience Journal of University of Zakho, 2016
In this paper, by using some nonstandard concepts given by Robinson and axiomatized by Nelson we study the behavior of functions defined on a discrete intervals, whose points are of infinitesimal distances.
Ibrahim O. Hamad, Sebar H. Jumha
doaj   +1 more source

Fuzzy Mathematics and Nonstandard Analysis Application to the Theory of Relativity [PDF]

open access: yesTransactions on Fuzzy Sets and Systems, 2022
In this paper, we extend some results of nonstandard analysis to include concepts from fuzzy mathematics. Then we apply our results to issues from special and general relativity and the theory of light-clocks.
John N Mordeson, Sunil Mathew
doaj   +1 more source

Categorical Nonstandard Analysis [PDF]

open access: yesSymmetry, 2021
In the present paper, we propose a new axiomatic approach to nonstandard analysis and its application to the general theory of spatial structures in terms of category theory. Our framework is based on the idea of internal set theory, while we make use of an endofunctor U on a topos of sets S together with a natural transformation υ, instead of the ...
Hayato Saigo, Juzo Nohmi
openaire   +3 more sources

Realizability with stateful computations for nonstandard analysis [PDF]

open access: yes, 2021
International audienceIn this paper we propose a new approach to realizability interpretations for nonstandard arithmetic. We deal with nonstandard analysis in the context of intuitionistic realizability, focusing on the Lightstone-Robinson construction ...
Miquey, Étienne, Dinis, Bruno
core   +6 more sources

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