Results 11 to 20 of about 8,289 (116)

One characteristic problem for the general hyperbolic differential equation of the third order with nonmultiple characteristics

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
In the paper we consider the well-posed characteristic problem for the general hyperbolic differential equation of the third order with nonmultiple characteristics. The solution of this problem is constructed in an explicit form. The illustrative example
Julia O Yakovleva
doaj   +3 more sources

On a characteristic problem for a loaded hyperbolic equation

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2019
The paper studies a loaded hyperbolic equation with one - dimensional wave equation in its main part. In the loaded components there are two points, which are distributed respectively along a pair of intersecting characteristics at a constant speed. For
A.Kh. Attaev
doaj   +1 more source

A study on the matching problem of engine, propeller, and ship hull under actual service conditions

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2023
In ship design, the matching of engine, propeller, and hull is an analytical process to establish the optimal operating mode so that the engine works safely with full power and the lowest fuel consumption, and a ship reaches desired speed. In theory, the
Thai Gia Tran, Hyun Cheol Kim
doaj   +1 more source

The Boundary Value Problem of the Equations with Nonnegative Characteristic Form

open access: yesBoundary Value Problems, 2010
We study the generalized Keldys-Fichera boundary value problem for a class of higher order equations with nonnegative characteristic. By using the acute angle principle and the Hölder inequalities and Young inequalities we discuss the existence of ...
Li Limei, Ma Tian
doaj   +2 more sources

Karakteristik dan Persoalan Ekonomi Masyarakat Petani dan Nelayan pada Kawasan Pantai di Torosiaje Kabupaten Pohuwatu

open access: yesCaraka Tani: Journal of Sustainable Agriculture, 2018
High poverty level because of coastal area community characteristic include low of social-economic living,minimum access to environment resources, and economic problems. Such as Torosiaje coastal area community in Pohuwato regency, where used as research
Erlyna Wida Riptanti
doaj   +1 more source

The Transmittal-Characteristic Function of Three-Interval Periodic Sturm-Liouville Problem with Transmission Conditions

open access: yesJournal of New Theory, 2021
In this paper, we study the periodic Sturm-Liouville problem, defined on three non-intersecting intervals with four supplementary conditions which are imposed at two internal points of interaction, the so-calledtransmission conditions.
Oktay Mukhtarov, Kadriye Aydemir
doaj   +1 more source

The construction problem for Hodge numbers modulo an integer in positive characteristic

open access: yesForum of Mathematics, Sigma, 2020
Let k be an algebraically closed field of positive characteristic. For any integer $m\ge 2$ , we show that the Hodge numbers of a smooth projective k-variety can take on any combination of values modulo m, subject only to Serre duality.
Remy van Dobben de Bruyn   +1 more
doaj   +1 more source

Problem of Description of the Characteristic Features of Discrimination in the Labor Sphere

open access: yesBulletin of Kharkiv National University of Internal Affairs, 2020
The Constitution of Ukraine guarantees the right to labor to everyone, including the possibility to earn one’s living by labor that he or she freely chooses or to which he or she freely agrees. However, discrimination is still one of the main problems in
A. V. Kychko
doaj   +1 more source

A hybrid algorithm for solving inverse boundary problems with respect to intermediate masses on a beam

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
The inverse problem of determining the weight of three intermediate masses on a uniform beam from the known three natural frequencies has been solved.
A.A. Aniyarov   +3 more
doaj   +1 more source

A Class of Characteristic-Value Problems [PDF]

open access: yesTransactions of the American Mathematical Society, 1962
This chapter discusses the existence of real numbers λ i such that a solution x (λ, t) on 0 x ″ + x F(x, λ, t) = 0 satisfies initial conditions. The chapter presents the theorem—Let D be the set {( x , λ, t) : — ∞ x x , hypothesis fourth is satisfied.
openaire   +1 more source

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