Results 11 to 20 of about 606,802 (315)

Neutrosophic Closed Set and Neutrosophic Continuous Functions [PDF]

open access: yesNeutrosophic Sets and Systems, 2014
In this paper, we introduce and study the concept of "neutrosophic closed set "and "neutrosophic continuous function". Possible application to GIS topology rules are touched upon.
A. A. Salama   +2 more
doaj   +3 more sources

Minimal closed sets and maximal closed sets

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Some properties of minimal closed sets and maximal closed sets are obtained, which are dual concepts of maximal open sets and minimal open sets, respectively. Common properties of minimal closed sets and minimal open sets are clarified; similarly, common properties of maximal closed sets and maximal open sets are obtained.
Fumie Nakaoka, Nobuyuki Oda
openaire   +3 more sources

On Validating Closed-Loop Behaviour from Noisy Frequency-Response Measurements [PDF]

open access: yes, 2005
It is shown how noisy closed-loop frequency-response measurements can be used to obtain pointwise in frequency bounds on the possible difference between the actual closed-loop system and the closed-loop comprising a nominal model of the plant and the ...
Cantoni, M, Date, P
core   +1 more source

On some problems of instability in semi-dynamical systems

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2021
The problem of instability of a closed positively invariant set M of a semi-dynamical system on an arbitrary metric space X is considered. The Lyapunov’s direct method for such problems has been developed quite completely in the case when M is compact ...
Boris S. Kalitine
doaj   +1 more source

Closing Aubry Sets I

open access: yesCommunications on Pure and Applied Mathematics, 2014
Given a Tonelli Hamiltonian H:T*M → ℝ of class Ck, with k ≥ 2, we prove the following results: (1) Assume there exist a recurrent point of the projected Aubry set and a critical viscosity subsolution u such that u is a C1 critical solution in an open neighborhood of the positive orbit of . Suppose further that u is “C2 at ”.
Figalli, Alessio, Rifford, Ludovic
openaire   +4 more sources

Scaling of gain bounds for switched adaptive control with large uncertainties [PDF]

open access: yes, 2007
A wide class of MMAC with a finite lp closed loop gain are shown to have an unboundedly increasing l_p closed loop gain for a simple set of plants under increasing parametric uncertainty.
Mark French   +3 more
core   +1 more source

Some new results on $\star$-metric spaces

open access: yesJournal of New Results in Science, 2023
The concept of $\star$-metric, based on the relaxation of triangle inequality of metric axioms by using a t-definer, was introduced by Khatami and Mirzavaziri.
Tarapada Bag, Abhishikta Das
doaj   +1 more source

Closed neutrosophic dominating set in neutrosophic graphs [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
The aim of this article is to concentrate on the notion of closed neutrosophic domination (CND) number 𝛾𝑐𝑙 (𝐺) of a neutrosophic graph (NG) with using effective edge, furthermore we gain a few outcomes on this notion, the relation between 𝛾𝑐𝑙 (𝐺) and ...
Amir Majeed Nabeel Arif
doaj   +1 more source

Global Solvably Closed Anabelian Geometry [PDF]

open access: yes, 2006
In this paper, we study the pro-Σ anabelian geometry of hyperbolic curves, where Σ is a nonempty set of prime numbers, over Galois groups of “solvably closed extensions” of number fields — i.e., infinite extensions of number fields which have ...
Mochizuki, Shinichi
core   +1 more source

On ordinally closed sets [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
Extensions of Cantor’s Intersection Theorem and Zalcwasser’s theorem on transfinite sequences of ambiguous sets of the first Baire class are given for linear sets.
openaire   +2 more sources

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