Results 21 to 30 of about 22,057,611 (283)

On Infinitesimal L_ω-smooth Functions.

open access: yesZanco Journal of Pure and Applied Sciences, 2022
The aim of this paper is to study smoothness, approximate continuity, and approximate derivative in a nonstandard manner with respect to infinitesimal parameters.
Ibrahim O. Hamad
doaj   +3 more sources

A constructive approach to nonstandard analysis

open access: yesAnnals of Pure and Applied Logic, 1995
The author introduces a constructive theory that may be useful in developing some of the areas of elementary nonstandard analysis. The theory is a conservative extension of \(\mathbf {HA}^\omega+ \mathbf {AC}\). The author adjoins a predicate, much as is done in Nelson's internal set theory, that distinguishes standard objects.
PALMGREN, E,
openaire   +2 more sources

Improved Definition of NonStandard Neutrosophic Logic and Introduction to Neutrosophic Hyperreals (Fifth version) [PDF]

open access: yesNeutrosophic Sets and Systems, 2022
In the fifth version of our response-paper [26] to Imamura’s criticism, we recall that NonStandard Neutrosophic Logic was never used by neutrosophic community in no application, that the quarter of century old neutrosophic operators (1995-1998 ...
Florentin Smarandache
doaj   +1 more source

Nonstandard analysis in topology: nonstandard and standard compactifications [PDF]

open access: yesJournal of Symbolic Logic, 2000
AbstractLet (X, T) be a topological space and *X a nonstandard extension of X. Sets of the form *G. where G ∈ T, form a base for the “standard” topology ST on *X. The topological space (*X, ST) will be used to study compactifications of (X, T) in a systematic way.
Salbany, S., Todorov, Todor D.
openaire   +3 more sources

Structure-based optimization problem for model predictive control in linear multi-input multi-value systems

open access: yesМіжнародний науково-технічний журнал "Проблеми керування та інформатики", 2022
Various technical and other realworld systems can be modelled with decent precision as linear systems. This approach is the core of the long established control theory, whose mathematical apparatus is ubiquitous when it comes to controlling some kind of
Михайло Дмитрович Міщенко
doaj   +1 more source

Harmonic analysis using methods of nonstandard analysis [PDF]

open access: yes, 2015
Throughout this research we use techniques of nonstandard analysis to derive and interpret results in classical harmonic analysis particularly in topological (metric) groups and theory of Fourier series.
Lak, Rashad Rashid Haji
core   +6 more sources

NONSTANDARD COMPLETION OF NON-COMPLETE METRIC SPACE

open access: yesZanco Journal of Pure and Applied Sciences, 2021
     Our aim in this study is to establishing nonstandard foundations, definitions and theorems for completion a noncomplete metric spaces. We have a lot of space or sets X which agree with all usual properties of complete, except at a small size subset
Ala O. Hassan, Ibrahim O. Hamad
doaj   +3 more sources

Algorithm and proof as Ω-invariance and transfer: A new model of computation in nonstandard analysis [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
We propose a new model of computation based on nonstandard analysis. Intuitively, the role of "algorithm" is played by a new notion of finite procedure, called Omega-invariance and inspired by physics, from nonstandard analysis.
Sam Sanders
doaj   +1 more source

Solution of Inhomogeneous Fractional Differential Equations with Polynomial Coefficients in Terms of the Green’s Function, in Nonstandard Analysis

open access: yesMathematics, 2021
Discussions are presented by Morita and Sato in Mathematics 2017; 5, 62: 1–24, on the problem of obtaining the particular solution of an inhomogeneous ordinary differential equation with polynomial coefficients in terms of the Green’s function, in the ...
Tohru Morita, Ken-ichi Sato
doaj   +1 more source

A Study on Pre-service Teachers' Discourse about Infinitesimals, Infinite Numbers, and Limits

open access: yesJournal of Educational Research in Mathematics, 2021
This study investigated seven pre-service teachers’ (who studied analysis) conceptions about infinitesimals, infinite numbers, and explanation methods of limits. Some pre-service teachers thought that infinitesimals and infinite numbers existed.
Seungju Baek, Jihyun Lee
doaj   +1 more source

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