Abstract
In this paper, the unique solvability of the Cauchy problem for a generalized hyperbolic Gellersted equation with two lines of degeneracy of different order is studied. A modified initial problem is formulated. By using the Riemann method the solution of this problem is constructed in an explicit form inside characteristic triangle. The constructed Riemann function is expressed by special Appell functions and Gauss hypergeometric functions of two variables.
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REFERENCES
G. Darboux, Theorie generale des surfaces (Gauthier-Villars, Paris, 1894), Vol. 3.
E. Holmgren, ‘‘Sur un probleme aux limites pour l’equation \({y^{m}}{z_{xx}}+{z_{yy}}=0\),’’ Ark. Mat., Astron. Fys. 19B (14), 1–3 (1927).
S. Gellerstedt, ‘‘Sur un probleme aux limites pour l’equation \({y^{2s}}{u_{xx}}+{u_{yy}}=0\),’’ Ark. Mat., Astron. Fys. 25A (10), 1–12 (1936).
F. I. Frankl, Selected Works on Gas Dynamics (Nauka, Moscow, 1973) [in Russian].
F. Tricomi, ‘‘Sulle equazioni lineari alle derivate parziali di secondo Ordine, di tipo misto,’’ Atti Acad. Naz. Lincei Mem. Cl. Fis. Mat. Nat. 14 (5), 134–247 (1923).
S. Gellerstedt, ‘‘Quelques problemes mixted pour l’equation \({y^{m}}{u_{xx}}+{u_{yy}}=0\),’’ Ark. Mat., Astron. Fys. 26A (3), 1–32 (1938).
F. I. Frankl, ‘‘On a boundary problem for the equation \({y}{u_{xx}}+{u_{yy}}=0\),’’ Nauch. Zap. MGU 152 (3), 99–116 (1951).
I. S. Berezin, ‘‘On the Cauchy problem for second order linear equations with initial data on a parabolic line,’’ Math. Collect. 24 (66), 301–320 (1949).
A. V. Bitsadze, Some Classes of Partial Differential Equations (Nauka, Moscow, 1981; CRC, Boca Raton, FL, 1988).
M. H. Protter, ‘‘The Cauchy problem for hyperbolic second order equation data on the parabolic line,’’ Canad. J. Math. 6, 542–553 (1954).
R. Conti, ‘‘Sul problema di Cauchy per l’equation con i dati sulla linea parabolica,’’ Ann. Math. Pure Appl. 31, 303–326 (1950).
J. M. Rassias, ‘‘Uniqueness of quasi-regular solutions for a bi-parabolic elliptic bihyperbolic Tricomi problem,’’ Complex Variables 47, 707–718 (2002).
J. M. Rassias, Lecture Notes on Mixed Type Partial Differential Equations (World Scientific, Singapore, 1990).
M. M. Smirnov, Equations of Mixed Type, Vol. 51 of Translations of Mathematical Monographies (Am. Math. Soc., Providence, RI, 1978).
G. Darboux, La Theorie Generale des Surfaces (Gauthier-Villars, Paris, 1915), Vol. 2.
D. W. Bresters, ‘‘On the Euler-Poisson-Darboux equation,’’ SIAM J. Math. Anal. 4, 31–41 (1973).
D. W. Bresters, ‘‘On a generalized Euler-Poisson-Darboux equation,’’ SIAM J. Math. Anal. 9, 924–934 (1978).
A. Hasanov, ‘‘The solution of the Cauchy problem for generalized Euler–Poisson–Darboux equation,’’ Int. J. Appl. Math. Stat. 8 (M07), 30–43 (2007).
P. Appell and J. Kampe de Feriet, Fonctions Hypergeometriques et Hyperspheriques; Polynomes d’Hermite (Gauthier-Villars, Paris, 1926).
A. Erdelyi, W. Magnus, F. Oberhettinger, and F. G. Tricomi, Higher Transcendental Functions (McGraw-Hill Book Company, New York, 1953), Vol. 1.
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The paper was supported by the grant of the Ministry of Science and Education of Republic of Kazakhstan through the Research Project no. AP05131026.
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(Submitted by E. K. Lipachev)
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Berdyshev, A.S., Hasanov, A. & Abdiramanov, Z.A. Solution of Cauchy Problem for the Generalized Gellerstedt Equation. Lobachevskii J Math 41, 1762–1771 (2020). https://doi.org/10.1134/S199508022009005X
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DOI: https://doi.org/10.1134/S199508022009005X