3 research outputs found

    On a Method of Solving Integral Equation of Carleman Type on the Pair of Segments

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    РассматриваСтся ΠΌΠ΅Ρ‚ΠΎΠ΄ Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ ΠΈΠ½Ρ‚Π΅Π³Ρ€Π°Π»ΡŒΠ½Ρ‹Ρ… ΡƒΡ€Π°Π²Π½Π΅Π½ΠΈΠΉ Ρ‚ΠΈΠΏΠ° ΠšΠ°Ρ€Π»Π΅ΠΌΠ°Π½Π° Π½Π° ΠΏΠ°Ρ€Π΅ смСТных ΠΈ Π½Π΅ΠΏΠ΅Ρ€Π΅ΡΠ΅ΠΊΠ°ΡŽΡ‰ΠΈΡ…ΡΡ ΠΎΡ‚Ρ€Π΅Π·ΠΊΠΎΠ². The method is considered of solving integral equations of Carleman type on the pair of adjacent and disjoint segments

    On a solution Method for the Riemann problem with two pairs of unknown functions

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    The solution of the Riemann problem with a piecewise constant matrix is constructed. The obtained result is expressed in terms of solutions of a differential equation of Fuchs class. To construct the corresponding differential equation a method of logarithmization of the matrix product is proposed. ΠŸΠΎΡΡ‚Ρ€ΠΎΠ΅Π½ΠΎ Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅ Π·Π°Π΄Π°Ρ‡ΠΈ Π ΠΈΠΌΠ°Π½Π° с кусочно-постоянной ΠΌΠ°Ρ‚Ρ€ΠΈΡ†Π΅ΠΉ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹ΠΉ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выраТаСтся Π² Ρ‚Π΅Ρ€ΠΌΠΈΠ½Π°Ρ… Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΉ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ уравнСния класса Ѐукса. Для построСния ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π΅Π³ΠΎ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ уравнСния ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ логарифмирования ΠΌΠ°Ρ‚Ρ€ΠΈΡ‡Π½ΠΎΠ³ΠΎ произвСдСния

    Об ΠΎΠ΄Π½ΠΎΠΌ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄Π΅ ΠΊ Ρ€Π΅ΡˆΠ΅Π½ΠΈΡŽ ΡΠΌΠ΅ΡˆΠ°Π½Π½Ρ‹Ρ… Π·Π°Π΄Π°Ρ‡ Ρ‚Π΅ΠΎΡ€ΠΈΠΈ упругости

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    Herein, a miscellaneous contact problem of the theory of elasticity in the upper half-plane is considered. The boundary is a real semi-axis separated into four parts, on each of which the boundary conditions are set for the real or imaginary part of two desired analytical functions. Using new unknown functions, the problem is reduced to an inhomogeneous Riemann boundary value problem with a piecewise constant 2 Γ— 2 matrix and four singular points. A differential equation of the Fuchs class with four singular points is constructed, the residue matrices of which are found by the logarithm method of the product of matrices. The single solution of the problem is represented in terms of Cauchy-type integrals when the solvability condition is met.РассмотрСна смСшанная контактная Π·Π°Π΄Π°Ρ‡Π° Ρ‚Π΅ΠΎΡ€ΠΈΠΈ упругости Π² Π²Π΅Ρ€Ρ…Π½Π΅ΠΉ полуплоскости. Π“Ρ€Π°Π½ΠΈΡ†Π΅ΠΉ являСтся Π΄Π΅ΠΉΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½Π°Ρ ΠΏΠΎΠ»ΡƒΠΎΡΡŒ, раздСлСнная Π½Π° Ρ‡Π΅Ρ‚Ρ‹Ρ€Π΅ части, Π½Π° ΠΊΠ°ΠΆΠ΄ΠΎΠΉ ΠΈΠ· ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Π·Π°Π΄Π°Π½Ρ‹ Π³Ρ€Π°Π½ΠΈΡ‡Π½Ρ‹Π΅ условия для Π΄Π΅ΠΉΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ ΠΈΠ»ΠΈ ΠΌΠ½ΠΈΠΌΠΎΠΉ части Π΄Π²ΡƒΡ… искомых аналитичСских Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΉ. Π‘ ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ Π½ΠΎΠ²Ρ‹Ρ… нСизвСстных Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΉ Π·Π°Π΄Π°Ρ‡Π° свСдСна ΠΊ Π½Π΅ΠΎΠ΄Π½ΠΎΡ€ΠΎΠ΄Π½ΠΎΠΉ ΠΊΡ€Π°Π΅Π²ΠΎΠΉ Π·Π°Π΄Π°Ρ‡Π΅ Π ΠΈΠΌΠ°Π½Π° с 2 Γ— 2 кусочно-постоянной ΠΌΠ°Ρ‚Ρ€ΠΈΡ†Π΅ΠΉ ΠΈ Ρ‡Π΅Ρ‚Ρ‹Ρ€ΡŒΠΌΡ особыми Ρ‚ΠΎΡ‡ΠΊΠ°ΠΌΠΈ. ΠŸΠΎΡΡ‚Ρ€ΠΎΠ΅Π½ΠΎ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΠ΅ ΡƒΡ€Π°Π²Π½Π΅Π½ΠΈΠ΅ класса Ѐукса с Ρ‡Π΅Ρ‚Ρ‹Ρ€ΡŒΠΌΡ особыми Ρ‚ΠΎΡ‡ΠΊΠ°ΠΌΠΈ, ΠΌΠ°Ρ‚Ρ€ΠΈΡ†Ρ‹-Π²Ρ‹Ρ‡Π΅Ρ‚Ρ‹ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ³ΠΎ Π½Π°ΠΉΠ΄Π΅Π½Ρ‹ Β«ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ логарифмирования» произвСдСния ΠΌΠ°Ρ‚Ρ€ΠΈΡ†. ЕдинствСнноС Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅ Π·Π°Π΄Π°Ρ‡ΠΈ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½ΠΎ Ρ‡Π΅Ρ€Π΅Π· ΠΈΠ½Ρ‚Π΅Π³Ρ€Π°Π»Ρ‹ Ρ‚ΠΈΠΏΠ° Коши ΠΏΡ€ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΈΠΈ ΠΎΠ΄Π½ΠΎΠ³ΠΎ условия Ρ€Π°Π·Ρ€Π΅ΡˆΠΈΠΌΠΎΡΡ‚ΠΈ
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