Churilov, A. N. On the existence of a positive solution of the Lur’e equation. (Russian) Zbl 0594.93029 Nonlinear oscillations and control theory, Interuniv. Collect., 3, Izhevsk 1981, 132-146 (1981). MSC: 93B99 15A24 93B05 93B07 PDFBibTeX XML
Blaga, Lucia On the uniqueness of the best approximate positive solution of algebraic systems of polynomials. (English) Zbl 0546.90086 Bul. Ştiinţ. Inst. Politeh. Cluj-Napoca, Ser. Electroteh. Energ. Inf. 24, 57-63 (1981). MSC: 90C30 90C99 65H10 65K05 93C10 93B40 PDFBibTeX XMLCite \textit{L. Blaga}, Bul. Științ. Inst. Politeh. Cluj-Napoca, Ser. Electroteh. Energ. Inf. 24, 57--63 (1981; Zbl 0546.90086)
Berestycki, Henri; Lions, Pierre-Louis; Peletier, L. A. An ODE approach to the existence of positive solutions for semilinear problems in \(R^ n\). (English) Zbl 0522.35036 Indiana Univ. Math. J. 30, 141-157 (1981). MSC: 35J60 34B15 35A05 35A35 PDFBibTeX XMLCite \textit{H. Berestycki} et al., Indiana Univ. Math. J. 30, 141--157 (1981; Zbl 0522.35036) Full Text: DOI
Vladimirov, V. S.; Drozhzhinov, Yu. N. Linear passive systems and distributions. (Russian) Zbl 0518.46027 Generalized functions and their applications in mathematical physics, Proc. int. Conf., Moscow 1980, 121-124 (1981). MSC: 46F10 47F05 35F10 76E25 46F12 PDFBibTeX XML
Morgenthal, Klaus Über das asymptotische Verhalten der Lösungen einer Differentialgleichung dritter Ordnung mit Nachwirkung. II. (German) Zbl 0517.34056 Beitr. Anal. 18, 149-156 (1981). MSC: 34K25 34E05 34K99 PDFBibTeX XMLCite \textit{K. Morgenthal}, Beitr. Anal. 18, 149--156 (1981; Zbl 0517.34056)
Vasil’ev, V. G. On a Volterra integral equation of the first kind having a positive solution. (Russian) Zbl 0514.45010 Approximate methods of solution and questions of the correctness of inverse problems, Collect. sci. Works, Novosibirsk 1981, 31-34 (1981). MSC: 45L05 45D05 PDFBibTeX XML
Budincevic, Mirko Unbounded solutions of a nonlinear differential equation. (English) Zbl 0507.34031 Zb. Rad., Prir.-Mat. Fak., Univ. Novom Sadu, Ser. Mat. 11, 71-75 (1981). MSC: 34C11 34A12 34A34 PDFBibTeX XMLCite \textit{M. Budincevic}, Zb. Rad., Prir.-Mat. Fak., Univ. Novom Sadu, Ser. Mat. 11, 71--75 (1981; Zbl 0507.34031)
Dubinskij, Yu. A. On the theory of the Cauchy problem for partial differential equations. (English. Russian original) Zbl 0506.35002 Sov. Math., Dokl. 24, 133-137 (1981); translation from Dokl. Akad. Nauk SSSR 259, 781-785 (1981). MSC: 35A10 35E05 35E15 46F05 PDFBibTeX XMLCite \textit{Yu. A. Dubinskij}, Sov. Math., Dokl. 24, 133--137 (1981; Zbl 0506.35002); translation from Dokl. Akad. Nauk SSSR 259, 781--785 (1981)
Aliev, B. On iterative Chebyshev methods for an equation of second kind on the spectrum. (Russian) Zbl 0503.65039 Dokl. Akad. Nauk Tadzh. SSR 24, 527-531 (1981). MSC: 65J10 65R20 47A50 PDFBibTeX XMLCite \textit{B. Aliev}, Dokl. Akad. Nauk Tadzh. SSR 24, 527--531 (1981; Zbl 0503.65039)
Popivanov, Nedyu I. Boundary value problems for hyperbolic-parabolic equations in multidimensional domains. (Russian) Zbl 0503.35060 PLISKA, Stud. Math. Bulg. 1981, No. 3, 88-119 (1981). MSC: 35L80 35A05 35D05 PDFBibTeX XMLCite \textit{N. I. Popivanov}, PLISKA, Stud. Math. Bulg. 3, 88--119 (1981; Zbl 0503.35060)
Zielinki, Andrzej; Zyczkowski, Michal The trigonometric contour series method in application to clamped plates with arbitrary contours. (Polish) Zbl 0499.73033 Rozpr. Inz. 29, 379-399 (1981). MSC: 74K20 74K15 42A32 PDFBibTeX XMLCite \textit{A. Zielinki} and \textit{M. Zyczkowski}, Rozpr. Inż. 29, 379--399 (1981; Zbl 0499.73033)
Yakovlev, M. N. Two-layer difference schemes for the solution of multipoint problems. (Russian) Zbl 0494.65031 Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 111, 218-233 (1981). MSC: 65J10 65L10 65N15 34G10 34B10 35K60 65N06 PDFBibTeX XMLCite \textit{M. N. Yakovlev}, Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 111, 218--233 (1981; Zbl 0494.65031) Full Text: EuDML
Kuznetsov, Yu. A.; Shashkov, V. V. Nonlinear integrodifferential equation system for the kinetics of reactors. (English. Russian original) Zbl 0491.45010 Differ. Equations 16, 1422-1433 (1981); translation from Differ. Uravn. 16, 2230-2246 (1980). MSC: 45K05 82D45 PDFBibTeX XMLCite \textit{Yu. A. Kuznetsov} and \textit{V. V. Shashkov}, Differ. Equations 16, 1422--1433 (1981; Zbl 0491.45010); translation from Differ. Uravn. 16, 2230--2246 (1980)
Morgenthal, Klaus Über das asymptotische Verhalten der Lösungen einer Differentialgleichung dritter Ordnung mit Nachwirkung I. (German) Zbl 0487.34084 Beitr. Anal. 18, 139-148 (1981). MSC: 34K25 34K99 PDFBibTeX XMLCite \textit{K. Morgenthal}, Beitr. Anal. 18, 139--148 (1981; Zbl 0487.34084)
Cerami, Giovanna Autovalori di un problema ellittico dipendente da un parametro in modo non lineare. (Italian) Zbl 0485.35038 Rend. Sem. Mat. Univ. Padova 65, 135-141 (1981). MSC: 35J25 35P15 35B50 PDFBibTeX XMLCite \textit{G. Cerami}, Rend. Semin. Mat. Univ. Padova 65, 135--141 (1981; Zbl 0485.35038) Full Text: Numdam EuDML
Collatz, L. Anwendung von Monotoniesaetzen zur Einschliessung der Lösungen von Gleichungen. (German) Zbl 0484.65040 Jahrb. Überblicke Mathematik 1981, 189-225 (1981). MSC: 65J15 65-02 47J25 47H07 65N15 65L10 PDFBibTeX XML
Pao, C. V. Stability and instability of the energy dependent diffusion system in reactor dynamics. (English) Zbl 0481.35019 Math. Methods Appl. Sci. 3, 488-505 (1981). MSC: 35B35 35B40 82D45 35K10 35A05 PDFBibTeX XMLCite \textit{C. V. Pao}, Math. Methods Appl. Sci. 3, 488--505 (1981; Zbl 0481.35019) Full Text: DOI
Nussbaum, Roger D. A quadratic integral equation. II. (English) Zbl 0476.45009 Indiana Univ. Math. J. 30, 871-906 (1981). MSC: 45G10 PDFBibTeX XMLCite \textit{R. D. Nussbaum}, Indiana Univ. Math. J. 30, 871--906 (1981; Zbl 0476.45009) Full Text: DOI
Meijerink, J. A.; van der Vorst, Henk A. Guidelines for the usage of incomplete decompositions in solving sets of linear equations as they occur in practical problems. (English) Zbl 0472.65028 J. Comput. Phys. 44, 134-155 (1981). MSC: 65F10 65N22 35J25 PDFBibTeX XMLCite \textit{J. A. Meijerink} and \textit{H. A. van der Vorst}, J. Comput. Phys. 44, 134--155 (1981; Zbl 0472.65028) Full Text: DOI
Evans, D. J.; Hadjidimos, A. Parallel solution to certain banded, symmetric and centro-symmetric systems by using the quadrant interlocking factorisation method. (English) Zbl 0472.65024 Math. Comput. Simulation 23, 180-187 (1981). MSC: 65F05 15A23 68N25 PDFBibTeX XMLCite \textit{D. J. Evans} and \textit{A. Hadjidimos}, Math. Comput. Simul. 23, 180--187 (1981; Zbl 0472.65024) Full Text: DOI
Gorbachuk, M. L.; Kashpirovskij, A. I. On weak solutions of differential equations in Hilbert spaces. (Russian) Zbl 0472.35019 Ukr. Mat. Zh. 33, 513-518 (1981). MSC: 35B65 35R20 PDFBibTeX XMLCite \textit{M. L. Gorbachuk} and \textit{A. I. Kashpirovskij}, Ukr. Mat. Zh. 33, 513--518 (1981; Zbl 0472.35019) Full Text: DOI
De Mottoni, Piero; Schiaffino, Andrea Bifurcation of periodic solutions for some systems with periodic coefficients. (English) Zbl 0469.34027 Nonlinear differential equations: invariance, stability, and bifurcation, Proc. Symp. int. Conf., Trento/Italy 1980, 327-338 (1981). MSC: 34C25 34D20 PDFBibTeX XML
Alex, Leo J. Solving exponential Diophantine equations. (English) Zbl 0468.10001 Math. Mag. 54, 259-269 (1981). MSC: 11A07 11-01 11D61 PDFBibTeX XMLCite \textit{L. J. Alex}, Math. Mag. 54, 259--269 (1981; Zbl 0468.10001) Full Text: DOI
Zanfir, Stefan On the operator of the dipolar elasticity. (English) Zbl 0467.73014 Bull. Math. Soc. Sci. Math. Répub. Soc. Roum., Nouv. Sér. 25(73), 201-206 (1981). MSC: 74E10 74E05 74A35 47F05 PDFBibTeX XMLCite \textit{S. Zanfir}, Bull. Math. Soc. Sci. Math. Répub. Soc. Roum., Nouv. Sér. 25(73), 201--206 (1981; Zbl 0467.73014)
Liu, Xue-zong A note on the double sweep method. (Chinese) Zbl 0464.65022 Math. Numer. Sin. 3, 281-285 (1981). MSC: 65F10 65L10 65F35 34B05 PDFBibTeX XMLCite \textit{X.-z. Liu}, Math. Numer. Sin. 3, 281--285 (1981; Zbl 0464.65022)
Schwarz, Hans-Rudolf Die Methode der konjugierten Gradienten mit Vorkonditionierungen. (German) Zbl 0463.65022 Numerische Behandlung von Differentialgleichungen, Bd. 3, Tag. Clausthal 1980, ISNM 56, 146-165 (1981). MSC: 65F10 65F35 65N22 65N30 PDFBibTeX XML
Hageman, Louis A.; Young, David M. Applied iterative methods. (English) Zbl 0459.65014 Computer Science and Applied Mathematics. New York etc.: Academic Press, A Subsidiary of Harcourt Brace Jovanovich, Publishers. XVII, 386 p. $ 39.50 (1981). MSC: 65F10 65-02 65B05 65N22 PDFBibTeX XML
Evans, D. J.; Lipitakis, E. A.; Missirlis, N. M. On sparse and compact preconditioned conjugate gradient methods for partial differential equations. (English) Zbl 0454.65023 Int. J. Comput. Math. 9, 55-80 (1981). MSC: 65F10 65N22 65F35 35J25 PDFBibTeX XMLCite \textit{D. J. Evans} et al., Int. J. Comput. Math. 9, 55--80 (1981; Zbl 0454.65023) Full Text: DOI
Anger, Gottfried; Czerner, Regine An inverse problem for the heat conduction equation. III. (English) Zbl 0452.35117 Math. Nachr. 108, 73-78 (1982). PDFBibTeX XMLCite \textit{G. Anger} and \textit{R. Czerner}, Math. Nachr. 108, 73--78 (1981; Zbl 0452.35117) Full Text: DOI
Allegretto, W. Positive solutions and spectral properties of second order elliptic operators. (English) Zbl 0421.35063 Pac. J. Math. 92, 15-25 (1981). MSC: 35P05 35B05 35J25 PDFBibTeX XMLCite \textit{W. Allegretto}, Pac. J. Math. 92, 15--25 (1981; Zbl 0421.35063) Full Text: DOI