Chen, Shuxing On the solvability of symmetric positive systems in a domain with non- exceptional corners. (Chinese. English summary) Zbl 0577.35007 Fudan J., Nat. Sci. 19, 249-257 (1980). MSC: 35F15 35A05 35M99 PDFBibTeX XMLCite \textit{S. Chen}, Fudan J., Nat. Sci. 19, 249--257 (1980; Zbl 0577.35007)
[Miyatake, Sadao; Tarama, Shigeo; Tahara, Hidetoshi; Ichinose, Wataru; Komatsu, Gen; Iwasaki, Nobuhisa; Iwasaki, Chisato; Suzuki, Takashi; Murayama, Reiji; Taira, Kazuaki; Yoshihara, Hideaki; Simizu, Nobutaka] Studies in the structure of solutions of partial differential equations. Proceedings of a Symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto, November 5-7, 1979. (Japanese) Zbl 0563.35001 RIMS Kôkyûroku, 376. Kyoto: Kyoto University, Research Institute for Mathematical Sciences. II, 162 p. (1980). MSC: 35-06 35A20 00B25 35B05 47D03 35L40 35A08 35A10 PDFBibTeX XML
Malonek, Helmuth Über die Gültigkeit von Sätzen vom Phragmén-Lindelöfschen Typ bei reellen partiellen Differentialgleichungen und ihre Herleitung durch komplexe Methoden. (German) Zbl 0545.35009 Martin-Luther-Universität Halle-Wittenberg. 179 S. (1980). Reviewer: M.Kracht MSC: 35B35 35F05 35J45 35B45 30C80 30G20 35R45 PDFBibTeX XML
Gotovtsev, I. B.; Slukhaev, V. V. Some invariants of systems of quasi-linear partial differential equations. (Russian) Zbl 0523.35074 Geom. Sb. 21, 108-112 (1980). MSC: 35L60 35L40 58A17 35E20 PDFBibTeX XMLCite \textit{I. B. Gotovtsev} and \textit{V. V. Slukhaev}, Geom. Sb. 21, 108--112 (1980; Zbl 0523.35074)
Cherednichenko, R. A. Numerical investigation of a process of forming wave fronts in an elastic half-space affected by surface stresses. (Russian) Zbl 0484.73017 Mat. Issled. 57, 128-132 (1980). MSC: 74J15 65M60 35L45 65M99 65N99 PDFBibTeX XMLCite \textit{R. A. Cherednichenko}, Mat. Issled. 57, 128--132 (1980; Zbl 0484.73017)
Tarkhanov, N. N. On the integral representation for solutions of systems of linear first order partial differential equations and some of its applications. (Russian) Zbl 0474.35025 Some questions of multidimensional complex analysis, Work Collect., Krasnoyarsk 1980, 147-160 (1980). MSC: 35C15 35J45 PDFBibTeX XML
Yamaguti, Masaya; Niizeki, Shyozo On the Cauchy problem for a semi-linear hyperbolic system. (English) Zbl 0474.35023 J. Math. Kyoto Univ. 20, 625-634 (1980). MSC: 35C10 35L60 35L45 PDFBibTeX XMLCite \textit{M. Yamaguti} and \textit{S. Niizeki}, J. Math. Kyoto Univ. 20, 625--634 (1980; Zbl 0474.35023) Full Text: DOI
Lukshin, A. V. Properties of the solution of the Goursat problem for one quasi-linear system. (English) Zbl 0467.35005 Mosc. Univ. Comput. Math. Cybern. 1980, No. 4, 61-65 (1980). MSC: 35A30 35F99 35B35 PDFBibTeX XMLCite \textit{A. V. Lukshin}, Mosc. Univ. Comput. Math. Cybern. 1980, No. 4, 61--65 (1980; Zbl 0467.35005)
Manukyan, S. M. Solution of the boundary value problem for the equation of mixed type when surfaces of discontinuity are present. (English) Zbl 0466.35057 U.S.S.R. Comput. Math. Math. Phys. 20, No. 4, 143-159 (1980). MSC: 35M99 35L60 35L67 65N06 PDFBibTeX XMLCite \textit{S. M. Manukyan}, U.S.S.R. Comput. Math. Math. Phys. 20, No. 4, 143--159 (1980; Zbl 0466.35057) Full Text: DOI
Ogawa, Hajimu Energy decay for differential inequalities in a Hilbert space with applications to ultrahyperbolic equations. (English) Zbl 0466.35011 J. Differ. Equations 38, 393-412 (1980). MSC: 35B40 35R45 35L99 35R20 35L60 PDFBibTeX XMLCite \textit{H. Ogawa}, J. Differ. Equations 38, 393--412 (1980; Zbl 0466.35011) Full Text: DOI
Sharma, V. D.; Shyam, Radhe Propagation of discontinuities along bicharacteristics in the unsteady flow of a relaxing gas. (English) Zbl 0465.76062 Proc. Indian Acad. Sci., Math. Sci. 89, 183-192 (1980). MSC: 76L05 76N15 35L60 35L99 PDFBibTeX XMLCite \textit{V. D. Sharma} and \textit{R. Shyam}, Proc. Indian Acad. Sci., Math. Sci. 89, 183--192 (1980; Zbl 0465.76062) Full Text: DOI
Nikol’skij, Eh. V. Generalized functionally invariant solutions of two-dimensional equations of second order and systems of first order. (English. Russian original) Zbl 0464.35063 Sov. Math., Dokl. 21, 222-225 (1980); translation from Dokl. Akad. Nauk SSSR 250, 812-815 (1980). MSC: 35N99 35A30 35G05 35G20 35D05 PDFBibTeX XMLCite \textit{Eh. V. Nikol'skij}, Sov. Math., Dokl. 21, 222--225 (1980; Zbl 0464.35063); translation from Dokl. Akad. Nauk SSSR 250, 812--815 (1980)
Eskin, Michael Elliptic overdetermined system of two equations in a smooth three- dimensional domain. (English) Zbl 0463.35016 Commun. Partial Differ. Equations 5, 935-968 (1980). MSC: 35F15 35N05 35J99 35S99 PDFBibTeX XMLCite \textit{M. Eskin}, Commun. Partial Differ. Equations 5, 935--968 (1980; Zbl 0463.35016) Full Text: DOI
Iskender-Zade, Z. A.; Gasanov, R. G. On a certain method of solution of some problems for a system of linear hyperbolic equations. (Russian) Zbl 0457.35056 Izv. Akad. Nauk Az. SSR, Ser. Fiz.- Tekh. Mat. Nauk 1980, No. 4, 96-100 (1980). MSC: 35L40 35C99 35C15 PDFBibTeX XMLCite \textit{Z. A. Iskender-Zade} and \textit{R. G. Gasanov}, Izv. Akad. Nauk Az. SSR, Ser. Fiz.-Tekh. Mat. Nauk 1980, No. 4, 96--100 (1980; Zbl 0457.35056)
van den Essen, Arno Fuchsian systems of linear differential equations associated to Nilsson class functions and an application to Feynman integrals. (English) Zbl 0457.35017 Complex analysis, microlocal calculus and relativistic quantum theory, Proc. Colloq., Les Houches 1979, Lect. Notes Phys. 126, 117-122 (1980). MSC: 35F05 35Q99 81Q30 PDFBibTeX XML
Jørgensen, Palle E. T. A generalization to locally compact abelian groups of a spectral problem for commuting partial differential operators. (English) Zbl 0438.43001 Prepr. Ser., Aarhus Univ. 1979/80, No. 21-31, 7p. (1980). MSC: 43A15 22D10 35F99 47D03 PDFBibTeX XML