Edit Profile (opens in new tab) Spagnolo, Sergio Compute Distance To: Compute Author ID: spagnolo.sergio Published as: Spagnolo, Sergio; Spagnolo, Sergio A. Homepage: http://people.dm.unipi.it/spagnolo/ External Links: MGP · Wikidata · ResearchGate · IdRef Documents Indexed: 88 Publications since 1964, including 1 Book 5 Contributions as Editor Reviewing Activity: 24 Reviews Co-Authors: 22 Co-Authors with 60 Joint Publications 460 Co-Co-Authors all top 5 Co-Authors 32 single-authored 19 Colombini, Ferruccio 14 D’Ancona, Piero 6 Taglialatela, Giovanni 5 De Giorgi, Ennio 5 Jannelli, Enrico 5 Marino, Antonio 3 Kinoshita, Tamotu 3 Mencherini, Lorenzo 2 Ambrosio, Luigi 2 Arosio, Alberto 2 Dal Maso, Gianni 2 Degiovanni, Marco 2 Forti, Marco 2 Miranda, Mario J. 2 Modica, Luciano 2 Murthy, M. K. Venkatesha 2 Nishitani, Tatsuo 2 Piccinini, Livio Clemente 1 Agostinetti, P. 1 Antoni, V. 1 Aprile, D. 1 Baltador, C. 1 Barbisan, M. 1 Brombin, M. 1 Cattabriga, Lamberto 1 Cavenago, M. 1 Chitarin, G. 1 Delogu, R. 1 Fellin, F. 1 Fonnesu, N. 1 Ghisi, Marina 1 Kajitani, Kunihiko 1 Mantovani, Filippo 1 Marconato, N. 1 Palma, M. Dalla 1 Pasqualotto, R. 1 Pimazzoni, A. 1 Sartori, Elena 1 Serianni, G. 1 Spolaore, M. 1 Zaniol, B. 1 Zaupa, M. all top 5 Serials 6 Annali della Scuola Normale Superiore di Pisa. Scienze Fisiche e Matematiche. III. Ser 5 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie IV 3 Journal of Differential Equations 3 Communications in Partial Differential Equations 2 Mathematische Annalen 2 Osaka Journal of Mathematics 2 Ricerche di Matematica 2 Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Serie IX. Rendiconti Lincei. Matematica e Applicazioni 2 Journal de Mathématiques Pures et Appliquées. Neuvième Série 2 Comptes Rendus de l’Académie des Sciences. Série I 2 Journal of Hyperbolic Differential Equations 2 Bollettino della Unione Matematica Italiana. Series IV 2 Comptes Rendus Hebdomadaires des Séances de l’Académie des Sciences, Série A 1 Archive for Rational Mechanics and Analysis 1 Communications on Pure and Applied Mathematics 1 Journal d’Analyse Mathématique 1 Acta Mathematica 1 Advances in Mathematics 1 Annali di Matematica Pura ed Applicata. Serie Quarta 1 Annales Scientifiques de l’École Normale Supérieure. Quatrième Série 1 Annali dell’Università di Ferrara. Nuova Serie. Sezione VII 1 Indiana University Mathematics Journal 1 Inventiones Mathematicae 1 Rendiconti del Seminario Matemàtico e Fisico di Milano 1 Rendiconti del Seminario Matematico della Università di Padova 1 Chinese Annals of Mathematics. Series B 1 Linear Algebra and its Applications 1 Bollettino della Unione Matemàtica Italiana. Serie VI. B 1 Bollettino della Unione Matemàtica Italiana. Serie VII. A 1 NoDEA. Nonlinear Differential Equations and Applications 1 Bollettino della Unione Matematica Italiana. Serie VIII. Sezione B. Articoli di Ricerca Matematica 1 New Journal of Physics 1 Annals of Mathematics. Second Series 1 Bollettino della Unione Matematica Italiana. Series III 1 Bollettino della Unione Matematica Italiana. Series V. B 1 Annali dell’Università di Ferrara. Sezione VII. Scienze Matematiche 1 Lettera Matematica. International Edition 1 Progress in Nonlinear Differential Equations and Their Applications 1 Springer Collected Works in Mathematics all top 5 Fields 81 Partial differential equations (35-XX) 6 General and overarching topics; collections (00-XX) 5 Calculus of variations and optimal control; optimization (49-XX) 4 History and biography (01-XX) 3 Ordinary differential equations (34-XX) 3 Operator theory (47-XX) 2 Real functions (26-XX) 2 Numerical analysis (65-XX) 2 Mechanics of deformable solids (74-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Functions of a complex variable (30-XX) 1 Potential theory (31-XX) 1 Integral equations (45-XX) 1 Functional analysis (46-XX) 1 Quantum theory (81-XX) 1 Statistical mechanics, structure of matter (82-XX) 1 Relativity and gravitational theory (83-XX) 1 Operations research, mathematical programming (90-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 65 Publications have been cited 1,277 times in 815 Documents Cited by ▼ Year ▼ Global solvability for the degenerate Kirchhoff equation with real analytic data. Zbl 0785.35067D’Ancona, Piero; Spagnolo, Sergio 262 1992 Sulla convergenza di soluzioni di equazioni paraboliche ed ellittiche. Zbl 0174.42101Spagnolo, Sergio 112 1968 Sur les équations hyperboliques avec des coefficients qui ne dependent que du temps. Zbl 0417.35049Colombini, Ferruccio; De Giorgi, Ennio; Spagnolo, Sergio 110 1979 Sulla convergenza degli integrali dell’energia per operatori ellittici del secondo ordine. Zbl 0274.35002De Giorgi, Ennio; Spagnolo, Sergio 103 1973 An example of a weakly hyperbolic Cauchy problem not well posed in \(C^\infty\). Zbl 0517.35053Colombini, Ferruccio; Spagnolo, Sergio 70 1982 Well-posedness in the Gevrey classes of the Cauchy problem for a non- strictly hyperbolic equation with coefficients depending on time. Zbl 0543.35056Colombini, Ferruccio; Jannelli, Enrico; Spagnolo, Sergio 70 1983 Sul limite delle soluzioni di problemi di Cauchy relativi all’equazione del calore. Zbl 0153.42103Spagnolo, Sergio 48 1967 Nonlinear perturbations of the Kirchhoff equation. Zbl 0807.35093D’Ancona, Piero; Spagnolo, Sergio 44 1994 The Cauchy problem for Kirchhoff equations. Zbl 0809.35061Spagnolo, Sergio 35 1992 Hyperbolic equations with non-analytic coefficients. Zbl 1103.35064Kinoshita, Tamotu; Spagnolo, Sergio 30 2006 On the Hölder continuity of solutions of second order elliptic equations in two variables. Zbl 0237.35028Piccinini, Livio C.; Spagnolo, Sergio 29 1972 A class of nonlinear hyperbolic problems with global solutions. Zbl 0826.35072D’Ancona, Piero; Spagnolo, Sergio 25 1993 Quasi-symmetrization of hyperbolic systems and propagation of the analytic regularity. Zbl 0916.35063D’Ancona, Piero; Spagnolo, Sergio 25 1998 Sur la convergence de solutions d’équations paraboliques. Zbl 0354.35009Colombini, Ferruccio; Spagnolo, Sergio 23 1977 Global solutions to the Cauchy problem for a nonlinear hyperbolic equation. Zbl 0598.35062Arosio, A.; Spagnolo, Sergio 23 1984 Global existence for abstract evolution equations of weakly hyperbolic type. Zbl 0616.35049Arosio, Alberto; Spagnolo, Sergio 22 1986 Non-uniqueness in hyperbolic Cauchy problems. Zbl 0649.35051Colombini, Ferruccio; Jannelli, Enrico; Spagnolo, Sergio 21 1987 Convergence of parabolic equations. Zbl 0356.35042Spagnolo, Sergio 19 1977 On the convergence of solutions of hyperbolic equations. Zbl 0375.35034Colombini, Ferruccio; Spagnolo, Sergio 19 1978 Kirchhoff type equations depending on a small parameter. Zbl 0837.35092D’Ancona, Piero; Spagnolo, Sergio 17 1995 Convergence in energy for elliptic operators. Zbl 0347.65034Spagnolo, Sergio 14 1976 Some examples of hyperbolic equations without local solvability. Zbl 0702.35146Colombini, Ferruccio; Spagnolo, Sergio 13 1989 Un tipo di approssimazione dell’operatore \(\sum_{i,j=1}^{n} D_ i\left(a_{ij}(x) D_ j\right)\) con operatori \(\sum_{j=1}^{n} D_ j \left( \beta(x) D_ j\right)\). Zbl 0187.35305Marino, Antonio; Spagnolo, Sergio 11 1969 On an abstract weakly hyperbolic equation modelling the nonlinear vibrating string. Zbl 0898.35103D’Ancona, Piero; Spagnolo, Sergio 10 1992 Weakly hyperbolic systems with Hölder continuous coefficients. Zbl 1068.35065D’Ancona, Piero; Kinoshita, Tamotu; Spagnolo, Sergio 9 2004 Hyperbolic equations with coefficients rapidly oscillating in time: A result of nonstability. Zbl 0589.35073Colombini, Ferruccio; Spagnolo, Sergio 9 1984 Funzionali analitici reali e funzioni armoniche. Zbl 0134.11102Mantovani, F.; Spagnolo, Sergio 7 1964 On the life span of the analytic solutions to quasilinear weakly hyperbolic equations. Zbl 0729.35012D’Ancona, Piero; Spagnolo, Sergio 6 1991 On the absolute continuity of the roots of some algebraic equations. Zbl 0993.30004Spagnolo, Sergio 6 1999 On pseudosymmetric hyperbolic systems. Zbl 1014.35055D’Ancona, Piero; Spagnolo, Sergio 6 1997 Homogeneous hyperbolic equations with coefficients depending on one space variable. Zbl 1147.35053Spagnolo, Sergio; Taglialatela, Giovanni 6 2007 On the 2 by 2 weakly hyperbolic systems. Zbl 1177.35132D’Ancona, Piero; Kinoshita, Tamotu; Spagnolo, Sergio 6 2008 Selected papers. Edited by Luigi Ambrosio, Gianni Dal Maso, Marco Forti, Mario Miranda and Sergio A. Spagnolo. Reprint of the 2006 edition. Zbl 1279.00037De Giorgi, Ennio 6 2013 A remark on uniformly symmetrizable systems. Zbl 1195.35203D’Ancona, Piero; Spagnolo, Sergio 5 2001 Small analytic solutions to nonlinear weakly hyperbolic systems. Zbl 0858.35079D’Ancona, Piero; Spagnolo, Sergio 4 1995 Analytic regularity of the solutions of a semi-linear weakly hyperbolic equation. Zbl 0692.35020Spagnolo, Sergio 4 1987 Local and semi-global solvability for systems of non-principal type. Zbl 0959.35005Spagnolo, Sergio 4 2000 Well-posedness of \(2\times 2\) systems with \(\mathcal C^{\infty}\)-coefficients. Zbl 1054.35023Mencherini, Lorenzo; Spagnolo, Sergio 3 2003 Una caratterizzazione degli operatori differenziali autoaggiunti del \(2^ \circ\) ordine a coefficienti misurabili e limitati. Zbl 0157.40701Spagnolo, Sergio 3 1968 Selected papers. Edited by Luigi Ambrosio, Gianni Dal Maso, Marco Forti, Mario Miranda and Sergio Spagnolo. Zbl 1096.01015De Giorgi, Ennio 3 2005 Some results of analytic regularity for the semi-linear weakly hyperbolic equations of the second order. Zbl 0694.35018Spagnolo, Sergio 3 1988 Analytic propagation for nonlinear weakly hyperbolic systems. Zbl 1217.35112Spagnolo, Sergio; Taglialatela, Giovanni 3 2010 Some convergence problems. Zbl 0332.46020Spagnolo, Sergio 3 1976 Existence et unicité des solutions des équations hyperboliques du second ordre à coefficients ne dependant que du temps. Zbl 0371.35029Colombini, Ferruccio; De Giorgi, Ennio; Spagnolo, Sergio 3 1978 Some inequalities of Glaeser-Bronšteĭn type. Zbl 1223.26034Spagnolo, Sergio; Taglialatela, Giovanni 3 2006 Partial differential equations and the calculus of variations. Essays in honor of Ennio De Giorgi. Volume I and II. Zbl 0671.00007Colombini, Ferruccio; Marino, A.; Modica, L.; Spagnolo, Sergio 2 1989 An extension of Glaeser inequality and its applications. Zbl 1065.35203Nishitani, Tatsuo; Spagnolo, Sergio 2 2004 Gevrey well-posedness for pseudosymmetric systems with lower order terms. Zbl 1058.35144Mencherini, Lorenzo; Spagnolo, Sergio 2 2003 Second order hyperbolic equations with coefficients real analytic in space variables and discontinuous in time. Zbl 0476.35051Colombini, Ferruccio; Spagnolo, Sergio 2 1980 Una valutazione della regolarita delle soluzioni di sistemi ellittici variazionali in due variabili. Zbl 0279.49014Piccinini, Livio C.; Spagnolo, Sergio 2 1974 Hyperbolic equations and classes of infinitely differentiable functions. Zbl 0609.35049Colombini, Ferruccio; Jannelli, Enrico; Spagnolo, Sergio 2 1986 Hyperbolic systems well posed in all Gevrey classes. Zbl 1073.35149Spagnolo, Sergio 2 2005 The Cauchy problem for weakly parabolic systems. Zbl 0891.35050D’Ancona, Piero; Spagnolo, Sergio 2 1997 Sur la convergence de solutions d’équations paraboliques avec des coefficients qui dependent du temps. Zbl 0341.35008Colombini, Ferruccio; Spagnolo, Sergio 2 1976 The Cauchy problem for properly hyperbolic equations in one space variable. Zbl 1502.35065Spagnolo, Sergio; Taglialatela, Giovanni 1 2022 Recent developments in hyperbolic equations. Proceedings of the conference of hyperbolic equations, University of Pisa, Italy, 1987. Zbl 0713.00007 1 1988 Uniformly symmetrizable \(3\times 3\) matrices. Zbl 1056.15012Mencherini, Lorenzo; Spagnolo, Sergio 1 2004 Analytic solutions to nonlinear weakly hyperbolic equations. Zbl 0799.35158Spagnolo, Sergio 1 1991 Alcuni sistemi differenziali non lineari del primo ordine sul toro. Zbl 0487.35019Degiovanni, Marco; Marino, Antonio; Spagnolo, Sergio 1 1982 Analytic and Gevrey well-posedness of the Cauchy problem for second order weakly hyperbolic equations with coefficients irregular in time. Zbl 0679.35057Spagnolo, Sergio 1 1986 A non-uniqueness result for the operators with principal part \(\partial ^ 2_ t+a(t)\partial ^ 2_ x\). Zbl 0694.35030Colombini, Ferruccio; Spagnolo, Sergio 1 1989 Convergence de solutions d’équations d’évolution. Zbl 0405.35041Spagnolo, Sergio 1 1979 Global solvability in Banach scales of weakly hyperbolic abstract equations. Zbl 0582.35072Spagnolo, Sergio 1 1985 Some algebraic properties of the hyperbolic systems. Zbl 1145.35420Spagnolo, Sergio; Taglialatela, Giovanni 1 2006 Propagation of analyticity for a class of nonlinear hyperbolic equations. Zbl 1225.35151Spagnolo, Sergio 1 2011 The Cauchy problem for properly hyperbolic equations in one space variable. Zbl 1502.35065Spagnolo, Sergio; Taglialatela, Giovanni 1 2022 Selected papers. Edited by Luigi Ambrosio, Gianni Dal Maso, Marco Forti, Mario Miranda and Sergio A. Spagnolo. Reprint of the 2006 edition. Zbl 1279.00037De Giorgi, Ennio 6 2013 Propagation of analyticity for a class of nonlinear hyperbolic equations. Zbl 1225.35151Spagnolo, Sergio 1 2011 Analytic propagation for nonlinear weakly hyperbolic systems. Zbl 1217.35112Spagnolo, Sergio; Taglialatela, Giovanni 3 2010 On the 2 by 2 weakly hyperbolic systems. Zbl 1177.35132D’Ancona, Piero; Kinoshita, Tamotu; Spagnolo, Sergio 6 2008 Homogeneous hyperbolic equations with coefficients depending on one space variable. Zbl 1147.35053Spagnolo, Sergio; Taglialatela, Giovanni 6 2007 Hyperbolic equations with non-analytic coefficients. Zbl 1103.35064Kinoshita, Tamotu; Spagnolo, Sergio 30 2006 Some inequalities of Glaeser-Bronšteĭn type. Zbl 1223.26034Spagnolo, Sergio; Taglialatela, Giovanni 3 2006 Some algebraic properties of the hyperbolic systems. Zbl 1145.35420Spagnolo, Sergio; Taglialatela, Giovanni 1 2006 Selected papers. Edited by Luigi Ambrosio, Gianni Dal Maso, Marco Forti, Mario Miranda and Sergio Spagnolo. Zbl 1096.01015De Giorgi, Ennio 3 2005 Hyperbolic systems well posed in all Gevrey classes. Zbl 1073.35149Spagnolo, Sergio 2 2005 Weakly hyperbolic systems with Hölder continuous coefficients. Zbl 1068.35065D’Ancona, Piero; Kinoshita, Tamotu; Spagnolo, Sergio 9 2004 An extension of Glaeser inequality and its applications. Zbl 1065.35203Nishitani, Tatsuo; Spagnolo, Sergio 2 2004 Uniformly symmetrizable \(3\times 3\) matrices. Zbl 1056.15012Mencherini, Lorenzo; Spagnolo, Sergio 1 2004 Well-posedness of \(2\times 2\) systems with \(\mathcal C^{\infty}\)-coefficients. Zbl 1054.35023Mencherini, Lorenzo; Spagnolo, Sergio 3 2003 Gevrey well-posedness for pseudosymmetric systems with lower order terms. Zbl 1058.35144Mencherini, Lorenzo; Spagnolo, Sergio 2 2003 A remark on uniformly symmetrizable systems. Zbl 1195.35203D’Ancona, Piero; Spagnolo, Sergio 5 2001 Local and semi-global solvability for systems of non-principal type. Zbl 0959.35005Spagnolo, Sergio 4 2000 On the absolute continuity of the roots of some algebraic equations. Zbl 0993.30004Spagnolo, Sergio 6 1999 Quasi-symmetrization of hyperbolic systems and propagation of the analytic regularity. Zbl 0916.35063D’Ancona, Piero; Spagnolo, Sergio 25 1998 On pseudosymmetric hyperbolic systems. Zbl 1014.35055D’Ancona, Piero; Spagnolo, Sergio 6 1997 The Cauchy problem for weakly parabolic systems. Zbl 0891.35050D’Ancona, Piero; Spagnolo, Sergio 2 1997 Kirchhoff type equations depending on a small parameter. Zbl 0837.35092D’Ancona, Piero; Spagnolo, Sergio 17 1995 Small analytic solutions to nonlinear weakly hyperbolic systems. Zbl 0858.35079D’Ancona, Piero; Spagnolo, Sergio 4 1995 Nonlinear perturbations of the Kirchhoff equation. Zbl 0807.35093D’Ancona, Piero; Spagnolo, Sergio 44 1994 A class of nonlinear hyperbolic problems with global solutions. Zbl 0826.35072D’Ancona, Piero; Spagnolo, Sergio 25 1993 Global solvability for the degenerate Kirchhoff equation with real analytic data. Zbl 0785.35067D’Ancona, Piero; Spagnolo, Sergio 262 1992 The Cauchy problem for Kirchhoff equations. Zbl 0809.35061Spagnolo, Sergio 35 1992 On an abstract weakly hyperbolic equation modelling the nonlinear vibrating string. Zbl 0898.35103D’Ancona, Piero; Spagnolo, Sergio 10 1992 On the life span of the analytic solutions to quasilinear weakly hyperbolic equations. Zbl 0729.35012D’Ancona, Piero; Spagnolo, Sergio 6 1991 Analytic solutions to nonlinear weakly hyperbolic equations. Zbl 0799.35158Spagnolo, Sergio 1 1991 Some examples of hyperbolic equations without local solvability. Zbl 0702.35146Colombini, Ferruccio; Spagnolo, Sergio 13 1989 Partial differential equations and the calculus of variations. Essays in honor of Ennio De Giorgi. Volume I and II. Zbl 0671.00007Colombini, Ferruccio; Marino, A.; Modica, L.; Spagnolo, Sergio 2 1989 A non-uniqueness result for the operators with principal part \(\partial ^ 2_ t+a(t)\partial ^ 2_ x\). Zbl 0694.35030Colombini, Ferruccio; Spagnolo, Sergio 1 1989 Some results of analytic regularity for the semi-linear weakly hyperbolic equations of the second order. Zbl 0694.35018Spagnolo, Sergio 3 1988 Recent developments in hyperbolic equations. Proceedings of the conference of hyperbolic equations, University of Pisa, Italy, 1987. Zbl 0713.00007 1 1988 Non-uniqueness in hyperbolic Cauchy problems. Zbl 0649.35051Colombini, Ferruccio; Jannelli, Enrico; Spagnolo, Sergio 21 1987 Analytic regularity of the solutions of a semi-linear weakly hyperbolic equation. Zbl 0692.35020Spagnolo, Sergio 4 1987 Global existence for abstract evolution equations of weakly hyperbolic type. Zbl 0616.35049Arosio, Alberto; Spagnolo, Sergio 22 1986 Hyperbolic equations and classes of infinitely differentiable functions. Zbl 0609.35049Colombini, Ferruccio; Jannelli, Enrico; Spagnolo, Sergio 2 1986 Analytic and Gevrey well-posedness of the Cauchy problem for second order weakly hyperbolic equations with coefficients irregular in time. Zbl 0679.35057Spagnolo, Sergio 1 1986 Global solvability in Banach scales of weakly hyperbolic abstract equations. Zbl 0582.35072Spagnolo, Sergio 1 1985 Global solutions to the Cauchy problem for a nonlinear hyperbolic equation. Zbl 0598.35062Arosio, A.; Spagnolo, Sergio 23 1984 Hyperbolic equations with coefficients rapidly oscillating in time: A result of nonstability. Zbl 0589.35073Colombini, Ferruccio; Spagnolo, Sergio 9 1984 Well-posedness in the Gevrey classes of the Cauchy problem for a non- strictly hyperbolic equation with coefficients depending on time. Zbl 0543.35056Colombini, Ferruccio; Jannelli, Enrico; Spagnolo, Sergio 70 1983 An example of a weakly hyperbolic Cauchy problem not well posed in \(C^\infty\). Zbl 0517.35053Colombini, Ferruccio; Spagnolo, Sergio 70 1982 Alcuni sistemi differenziali non lineari del primo ordine sul toro. Zbl 0487.35019Degiovanni, Marco; Marino, Antonio; Spagnolo, Sergio 1 1982 Second order hyperbolic equations with coefficients real analytic in space variables and discontinuous in time. Zbl 0476.35051Colombini, Ferruccio; Spagnolo, Sergio 2 1980 Sur les équations hyperboliques avec des coefficients qui ne dependent que du temps. Zbl 0417.35049Colombini, Ferruccio; De Giorgi, Ennio; Spagnolo, Sergio 110 1979 Convergence de solutions d’équations d’évolution. Zbl 0405.35041Spagnolo, Sergio 1 1979 On the convergence of solutions of hyperbolic equations. Zbl 0375.35034Colombini, Ferruccio; Spagnolo, Sergio 19 1978 Existence et unicité des solutions des équations hyperboliques du second ordre à coefficients ne dependant que du temps. Zbl 0371.35029Colombini, Ferruccio; De Giorgi, Ennio; Spagnolo, Sergio 3 1978 Sur la convergence de solutions d’équations paraboliques. Zbl 0354.35009Colombini, Ferruccio; Spagnolo, Sergio 23 1977 Convergence of parabolic equations. Zbl 0356.35042Spagnolo, Sergio 19 1977 Convergence in energy for elliptic operators. Zbl 0347.65034Spagnolo, Sergio 14 1976 Some convergence problems. Zbl 0332.46020Spagnolo, Sergio 3 1976 Sur la convergence de solutions d’équations paraboliques avec des coefficients qui dependent du temps. Zbl 0341.35008Colombini, Ferruccio; Spagnolo, Sergio 2 1976 Una valutazione della regolarita delle soluzioni di sistemi ellittici variazionali in due variabili. Zbl 0279.49014Piccinini, Livio C.; Spagnolo, Sergio 2 1974 Sulla convergenza degli integrali dell’energia per operatori ellittici del secondo ordine. Zbl 0274.35002De Giorgi, Ennio; Spagnolo, Sergio 103 1973 On the Hölder continuity of solutions of second order elliptic equations in two variables. Zbl 0237.35028Piccinini, Livio C.; Spagnolo, Sergio 29 1972 Un tipo di approssimazione dell’operatore \(\sum_{i,j=1}^{n} D_ i\left(a_{ij}(x) D_ j\right)\) con operatori \(\sum_{j=1}^{n} D_ j \left( \beta(x) D_ j\right)\). Zbl 0187.35305Marino, Antonio; Spagnolo, Sergio 11 1969 Sulla convergenza di soluzioni di equazioni paraboliche ed ellittiche. Zbl 0174.42101Spagnolo, Sergio 112 1968 Una caratterizzazione degli operatori differenziali autoaggiunti del \(2^ \circ\) ordine a coefficienti misurabili e limitati. Zbl 0157.40701Spagnolo, Sergio 3 1968 Sul limite delle soluzioni di problemi di Cauchy relativi all’equazione del calore. Zbl 0153.42103Spagnolo, Sergio 48 1967 Funzionali analitici reali e funzioni armoniche. Zbl 0134.11102Mantovani, F.; Spagnolo, Sergio 7 1964 all cited Publications top 5 cited Publications all top 5 Cited by 798 Authors 34 Colombini, Ferruccio 30 Spagnolo, Sergio 20 D’Ancona, Piero 18 Casado-Díaz, Juan 18 Ruzhansky, Michael V. 16 Briane, Marc 16 Zhang, Binlin 15 Cicognani, Massimo 14 Nishitani, Tatsuo 13 Del Santo, Daniele 13 Ghisi, Marina 12 Garetto, Claudia 12 Kinoshita, Tamotu 11 Ascanelli, Alessia 11 Gobbino, Massimo 11 Hirosawa, Fumihiko 11 Rădulescu, Vicenţiu D. 11 Reissig, Michael 10 Abdulle, Assyr 10 Dai, Guowei 10 Taglialatela, Giovanni 10 Tang, Xianhua 9 Boccardo, Lucio 9 De Arcangelis, Riccardo 9 Manfrin, Renato 8 Cheng, Bitao 8 Donato, Patrizia 8 He, Xiaoming 8 Li, Gongbao 8 Matsuyama, Tokio 8 Pucci, Patrizia 8 Xiang, Mingqi 8 Ye, Hongyu 7 Kajitani, Kunihiko 7 Murat, François 7 Visintin, Augusto 7 Wu, Tsungfang 7 Wu, Xian 7 Zou, Wenming 6 Dal Maso, Gianni 6 Fanelli, Francesco 6 Nesi, Vincenzo 6 Sbordone, Carlo 5 Cappiello, Marco 5 D’Abbicco, Marcello 5 Fusco, Nicola 5 Han, Yuzhu 5 Hwang, Jinsoo 5 Jannelli, Enrico 5 Mao, Anmin 5 Molica Bisci, Giovanni 5 Sun, Juntao 5 Yamazaki, Taeko 5 Yang, Zhijian 4 Arosio, Alberto 4 Chen, Sitong 4 Chiadò Piat, Valeria 4 Defranceschi, Anneliese 4 Gourdin, Daniel 4 Gramchev, Todor V. 4 Maestre, Faustino 4 Marcellini, Paolo 4 Moscariello, Gioconda 4 Orrù, Nicola 4 Panizzi, Stefano 4 Papadopoulos, Perikles G. 4 Papageorgiou, Nikolaos S. 4 Prizzi, Martino 4 Shen, Zupei 4 Svanstedt, Nils E. M. 4 Tang, Chun-Lei 4 Wang, Li 4 Yagdjian, Karen 4 Zhang, Zhitao 3 Aliev, Akbar B. 3 Biroli, Marco 3 Calvo-Jurado, Carmen 3 Cao, Liqun 3 Chen, Zhengmao 3 Corbo Esposito, Antonio 3 Couce-Calvo, Julio 3 Denkowski, Zdzislaw 3 Ebert, Marcelo Rempel 3 Flodén, Liselott 3 Garroni, Adriana 3 Guo, Shangjiang 3 Han, Qing 3 Hayashi, Nakao 3 Hou, Thomas Yizhao 3 Hu, Die 3 Ishida, Haruhisa 3 Ji, Shuguan 3 Jia, HuiFang 3 Li, Quanqing 3 Liang, Sihua 3 Lions, Jacques-Louis 3 Liu, Duchao 3 Liu, Jun 3 Liu, Zhisu 3 Lorenz, Daniel ...and 698 more Authors all top 5 Cited in 194 Serials 63 Journal of Differential Equations 54 Journal of Mathematical Analysis and Applications 38 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 35 Annali di Matematica Pura ed Applicata. Serie Quarta 20 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie IV 19 Nonlinear Analysis. Theory, Methods & Applications 17 Calculus of Variations and Partial Differential Equations 14 Applied Mathematics and Optimization 14 Rendiconti del Seminario Matematico della Università di Padova 13 Journal de Mathématiques Pures et Appliquées. Neuvième Série 12 Applicable Analysis 12 Archive for Rational Mechanics and Analysis 11 Journal of Mathematical Physics 11 Annales de l’Institut Henri Poincaré. Analyse Non Linéaire 10 Computers & Mathematics with Applications 9 Mathematical Methods in the Applied Sciences 9 Transactions of the American Mathematical Society 9 Communications in Partial Differential Equations 9 NoDEA. Nonlinear Differential Equations and Applications 9 European Series in Applied and Industrial Mathematics (ESAIM): Control, Optimization and Calculus of Variations 9 Communications on Pure and Applied Analysis 8 Journal d’Analyse Mathématique 8 Mathematische Annalen 7 ZAMP. Zeitschrift für angewandte Mathematik und Physik 7 Journal of Functional Analysis 7 Osaka Journal of Mathematics 7 Applications of Mathematics 7 Annali dell’Università di Ferrara. Sezione VII. Scienze Matematiche 7 Advances in Nonlinear Analysis 6 Journal of Computational and Applied Mathematics 6 Journal of Optimization Theory and Applications 6 Proceedings of the American Mathematical Society 6 Applied Mathematics Letters 6 Discrete and Continuous Dynamical Systems 6 Abstract and Applied Analysis 6 Nonlinear Analysis. Real World Applications 6 Boundary Value Problems 6 Complex Variables and Elliptic Equations 6 Discrete and Continuous Dynamical Systems. Series S 5 Mathematische Nachrichten 5 Bulletin des Sciences Mathématiques 5 Journal of Evolution Equations 5 Journal of Hyperbolic Differential Equations 5 Annali della Scuola Normale Superiore di Pisa. Scienze Fisiche e Matematiche. III. Ser 4 Mathematics of Computation 4 Rendiconti del Seminario Matemàtico e Fisico di Milano 4 RAIRO. Modélisation Mathématique et Analyse Numérique 4 Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Serie IX. Rendiconti Lincei. Matematica e Applicazioni 4 The Journal of Geometric Analysis 4 Journal of Elasticity 4 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 4 Annales de la Faculté des Sciences de Toulouse. Mathématiques. Série VI 4 Acta Mathematica Scientia. Series B. (English Edition) 4 Comptes Rendus. Mathématique. Académie des Sciences, Paris 4 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie V 4 Mediterranean Journal of Mathematics 4 Journal of Pseudo-Differential Operators and Applications 4 Analysis and Mathematical Physics 4 Journal of Function Spaces 3 Computer Methods in Applied Mechanics and Engineering 3 Journal of Computational Physics 3 Nonlinearity 3 Duke Mathematical Journal 3 Journal of the Mathematical Society of Japan 3 Manuscripta Mathematica 3 Mathematische Zeitschrift 3 Numerische Mathematik 3 Publications of the Research Institute for Mathematical Sciences, Kyoto University 3 SIAM Journal on Control and Optimization 3 Rendiconti di Matematica e delle sue Applicazioni. Serie VII 3 Chinese Annals of Mathematics. Series B 3 Acta Applicandae Mathematicae 3 Asymptotic Analysis 3 M\(^3\)AS. Mathematical Models & Methods in Applied Sciences 3 SIAM Journal on Mathematical Analysis 3 Journal of Mathematical Sciences (New York) 3 Electronic Journal of Differential Equations (EJDE) 3 Mathematics and Mechanics of Solids 3 Communications in Contemporary Mathematics 3 Advanced Nonlinear Studies 3 Multiscale Modeling & Simulation 3 European Series in Applied and Industrial Mathematics (ESAIM): Mathematical Modelling and Numerical Analysis 2 Journal of Applied Mathematics and Mechanics 2 Journal of the Mechanics and Physics of Solids 2 Arkiv för Matematik 2 Advances in Mathematics 2 Applied Mathematics and Computation 2 Monatshefte für Mathematik 2 Proceedings of the Japan Academy. Series A 2 Results in Mathematics 2 Ricerche di Matematica 2 Applied Numerical Mathematics 2 Acta Mathematicae Applicatae Sinica. English Series 2 Journal of Dynamics and Differential Equations 2 Journal of Convex Analysis 2 Annales Academiae Scientiarum Fennicae. Mathematica 2 Communications in Nonlinear Science and Numerical Simulation 2 Discrete and Continuous Dynamical Systems. Series B 2 Portugaliae Mathematica. Nova Série 2 Acta Mathematica Scientia. Series A. (Chinese Edition) ...and 94 more Serials all top 5 Cited in 42 Fields 712 Partial differential equations (35-XX) 88 Mechanics of deformable solids (74-XX) 86 Calculus of variations and optimal control; optimization (49-XX) 67 Operator theory (47-XX) 38 Numerical analysis (65-XX) 25 Ordinary differential equations (34-XX) 24 Functional analysis (46-XX) 23 Global analysis, analysis on manifolds (58-XX) 15 Integral equations (45-XX) 14 Functions of a complex variable (30-XX) 14 Fluid mechanics (76-XX) 12 Dynamical systems and ergodic theory (37-XX) 12 Optics, electromagnetic theory (78-XX) 12 Systems theory; control (93-XX) 9 Real functions (26-XX) 8 Probability theory and stochastic processes (60-XX) 6 Potential theory (31-XX) 6 Classical thermodynamics, heat transfer (80-XX) 6 Biology and other natural sciences (92-XX) 5 Linear and multilinear algebra; matrix theory (15-XX) 5 Harmonic analysis on Euclidean spaces (42-XX) 4 History and biography (01-XX) 4 Several complex variables and analytic spaces (32-XX) 4 General topology (54-XX) 4 Mechanics of particles and systems (70-XX) 4 Quantum theory (81-XX) 4 Statistical mechanics, structure of matter (82-XX) 3 Measure and integration (28-XX) 3 Abstract harmonic analysis (43-XX) 2 Difference and functional equations (39-XX) 2 Differential geometry (53-XX) 2 Operations research, mathematical programming (90-XX) 1 General and overarching topics; collections (00-XX) 1 Mathematical logic and foundations (03-XX) 1 Combinatorics (05-XX) 1 Algebraic geometry (14-XX) 1 Topological groups, Lie groups (22-XX) 1 Approximations and expansions (41-XX) 1 Integral transforms, operational calculus (44-XX) 1 Statistics (62-XX) 1 Relativity and gravitational theory (83-XX) 1 Geophysics (86-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. 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