Results 31 to 40 of about 1,609,595 (239)

Ordinary differential equations described by their Lie symmetry algebra [PDF]

, 2014
The theory of Lie remarkable equations, i.e. differential equations characterized by their Lie point symmetries, is reviewed and applied to ordinary differential equations.
Manno, Gianni, Oliveri, Francesco, Saccomandi, Giuseppe, Vitolo, Raffaele   +3 more
core   +2 more sources

Difference–Differential Equations [PDF]

Nature, 1948
THE general linear homogeneous difference–differential equation with constant coefficients is where 0 ⩽ μ ⩽m, 0⩽ν ⩽ n, y(ν)(t) is the ν-th derivative of the unknown function y (t) and 0 = b0 bm, if amn≠ 0. (2) Was first given by Hilb8, but under conditions which would exclude most of the applications.
openaire   +1 more source

Isospectral Dirac operators

Electronic Journal of Qualitative Theory of Differential Equations, 2017
We give the description of self-adjoint regular Dirac operators, on $[0, \pi]$, with the same spectra.
Yuri Ashrafyan, Tigran Harutyunyan
doaj   +1 more source

Isomonodromic differential equations and differential categories

, 2013
We study isomonodromicity of systems of parameterized linear differential equations and related conjugacy properties of linear differential algebraic groups by means of differential categories.
Gorchinskiy, Sergey, Ovchinnikov, Alexey
core   +1 more source

Motion of Submerged Body in a Frozen Channel with Compressed Porous Ice

Applied Sciences
The problem of submerged body motion in a frozen channel is considered. The fluid in the channel is assumed to be inviscid and incompressible. Fluid flow is the potential. The ice cover has non-uniform compression along the principal coordinates.
Tatyana Sibiryakova, Kristina Naydenova, Kirill Serykh, Tatyana Khabakhpasheva   +3 more
doaj   +1 more source

Solution to Initial-Boundary Value Problem for the Heat Conductivity Equation With a Discontinuous Coefficient and General Conjugation Conditions

International Journal of Mathematics and Mathematical Sciences
A solution to the initial-boundary value problem for the heat equation with a discontinuous coefficient and a general conjugation condition is verified using the Fourier method.
Umbetkul Кoilyshov, Makhmud Sadybekov, Кulnyar Beisenbayeva   +2 more
doaj   +1 more source

Navier–Stokes Equation in a Cone with Cross-Sections in the Form of 3D Spheres, Depending on Time, and the Corresponding Basis

Mathematics
The work establishes the unique solvability of a boundary value problem for a 3D linearized system of Navier–Stokes equations in a degenerate domain represented by a cone.
Muvasharkhan Jenaliyev, Akerke Serik, Madi Yergaliyev   +2 more
doaj   +1 more source

Differential constraints compatible with linearized equations

, 1998
Differential constraints compatible with the linearized equations of partial differential equations are examined.
Bluman G.W., Fokas A.S., Fordy A.P., Ibragimov N.Kh., Mikhailov A.V., Olver P.J., Olver P.J., Olver P.J., Olver P.J., Rabelo M.L., Satır A., Sneddon I., Svinolupov S.I.   +12 more
core   +1 more source

Stability, Boundedness, and Existence of Periodic Solutions to Certain Third-Order Delay Differential Equations with Multiple Deviating Arguments

International Journal of Differential Equations, 2015
The behaviour of solutions for certain third-order nonlinear differential equations with multiple deviating arguments is considered. By employing Lyapunov’s second method, a complete Lyapunov functional is constructed and used to establish sufficient ...
A. T. Ademola, B. S. Ogundare, M. O. Ogundiran, O. A. Adesina   +3 more
doaj   +1 more source

Riccati Differential Equation for Hypergeometric Differential Equation

Rendiconti del Seminario Matematico della Università di Padova, 2012
In this paper, we study the solutions of Riccati differential equation corresponding to p -adic differential equations which are solvable on the generic disc.
openaire   +2 more sources