Journal of Osh State University. Mathematics. Physics. Technical Sciences

Keywords: matrix; analytic function; curved quadrilateral; singularly perturbed; system of equations; eigenvalues of a matrix; asymptotic; uniform approximations

Keywords: uniform space; growth; base of uniformity; Cauchy filter; uniform topology

Keywords: Boundary value problem; generalized solution; Integral identity; convergence approximations

Keywords: small perturbation; differential equations; stability; Cauchy problem; small parameter; solution; asymptotic

Keywords: perturbation; differential equations; stability; Cauchy problem; small parameter; solution

Keywords: Galerkin method; 2π-periodic solution; second-order quasilinear integro-differential equation; exact and approximate solution

Keywords: nonlinear partial differential equations of the second order; analytic function; periodic solution

Keywords: singularly perturbed small step discrete systems; fast and slow variables; asymptotic system; optimal trajectory; optimal control of slow and fast subsystems; Riccati and Lyapunov equations; moment relations

Keywords: additional argument method; system of equations; second order; partial derivatives; initial problem; integral equation

Keywords: Integro-differential; partial derivatives; additional argument method; initial problem; integral equation; contraction mapping principle

Keywords: conjugation problem; boundary conditions; composite type; Goursat problem; Green and Riemann function; Dirichlet problem

Keywords: generalized solutions; second-order mixed-type equation; semi-nonlocal boundary value problem; Fourier transform; the methods of “ε -regularization” and a priori estimates

Keywords: generalized solution; Tricomi model equation; semi-periodic boundary value problem; Fourier transform; methods of “ε -regularization” and a priori estimates

Keywords: Phragmen–Lindelof type theorem; biharmonic function; Carlеman’s function; integral representation

Keywords: equivalence relation; quotient space; asymptotical equivalence; differential equation; initial value problem

Keywords: vector function; kernel; space; equations; parameter; singularly perturbed systems of equations; theorem

Keywords: Cayley tree; Ising-Potts model; periodic and weakly periodic ground states

Keywords: uniformly H-spaces; precompact spaces; σ-precompact spaces; т-bounded spaces; precompact mappings; uniformly perfect mappings

Keywords: countably paracompact extensions; sequentially completeness; Dieudonne sequentially completeness; countably preparacompactness; preuniversality

Keywords: porous medium; filtration; multilayeredness; structuredness; mathematical model; algorithms; numerical solutions

Keywords: functional relation; differential equation; controlled object; classification; computer presentation

Keywords: category; morphism; equation; predicate; solution; correctness

Keywords: integral equation of the first kind; analytical function; correctness; transformation of equation

Keywords: biboundary layers; Cauchy problem; singular point; bisingular perturbation; ordinary differential equation

Keywords: hamiltonian; eigenvalues; eigenfuncion; unitary equivalence operators

Keywords: activity of an agricultural firm; agricultural products; mineral fertilizers; optimization modeling

Keywords: partial differential equation; non-linear equation; equation of hyperbolic type; method of additional argument; Cauchy problem; contracting mappings principle

Keywords: 3D technologies; technological literacy; construction; Technology; Methodology; design; professional

Keywords: inverse problem; partial differential equation; initial condition; boundary condition; function trace; Green's function; problem solution; problem solvability

Keywords: geometrical fractal; projection; 3D model; computer program

Keywords: parabolic-hyperbolic type equation; mixed domain; Tricomi problem; Cauchy problem; first boundary value problem

Keywords: pseudoparabolic type equation; countable system; integral condition; Fredholm integral equation; solvability

Keywords: inverse kinematic problem; two-dimensional inversion; three-dimensional inversion; digital records

Keywords: algorithm; quadratic programming; optimization; penalty method; Lagrange multiplier; back calculation; system of equations

Keywords: boundary value problems; mixed-hyperbolic operator; integral equations; Riemann and Green's function

Keywords: Diophantine equation; greatest common divisor; linear combinations; sets; abelian group

Keywords: hyperbolic equation; nonlocal problem; integral conditions; function of Ryman; integral equation

Keywords: algorithm; order; chaos; irgöö; numerosity; effect; phenomenon; tracery

Keywords: Cauchy problem; ill-posed problems; Carleman function; regularized solutions; regularization; continuation formulas

Keywords: equations with multiple characteristics of the third order; second boundary value problem; variable coefficient; Green's function; Fredholm integral equation of the second kind

Keywords: Loaded Korteweg-de Vries equation; Sturm-Liouville operator; Jost solutions; integral equation Gelfand-Levitan-Marchenko

Keywords: Cauchy problem; ill-posed problems; biharmonic equations Carleman function; regularized solutions; regularization; continuation formulas

Keywords: equations of mixed type; singular coefficient; boundary characteristic; missing Tricomi condition; analogue of the Frankl condition

Keywords: Rigid problems; finite difference method; singular point; sweep method; extended problem

Keywords: pseudoparabolic equation; boundary value problems; fractional order differential equation; Caputo fractional derivative; Riemann-Liouville fractional integral; Fourier method; Mittag-Leffler function; Bessel operator

Keywords: Uniform real complete extension; locally compact paracompact extension; locally compact Lindelöff extension

Keywords: Hilfer derivative; the method of nonlinear capacity; non-existence of the solution

Keywords: Differential game; l-catch; evasion; pursuer; evader; geometric constraint; strategy; guaranteed time of l-catch

Keywords: axiomatization; topological space; kinematical space; virtual space; velocity; motion