Edit Profile (opens in new tab) Szulkin, Andrzej Co-Author Distance Author ID: szulkin.andrzej Published as: Szulkin, Andrzej; Szulkin, A. Documents Indexed: 81 Publications since 1973, including 1 Book and 2 Additional arXiv Preprints Reviewing Activity: 71 Reviews Co-Authors: 25 Co-Authors with 55 Joint Publications 614 Co-Co-Authors all top 5 Co-Authors 26 single-authored 12 Clapp, Mónica 7 Willem, Michel 5 Arioli, Gianni 5 Kryszewski, Wojciech 4 Chabrowski, Jan H. 3 Li, Shujie 3 Mederski, Jarosław 3 Saldaña, Alberto 3 Weth, Tobias 3 Zou, Wenming 2 Bartsch, Thomas J. 2 Ding, Yanheng 2 Fournier, Gilles 2 Squassina, Marco 2 Waliullah, Shoyeb 1 Ackermann, Nils 1 Bianchi, Gabriele 1 Fang, Xiangdong 1 Iturriaga, Renato 1 Jalilian, Yaghoub 1 Ji, Chao 1 Li, Gongbao 1 Perera, Kanishka 1 Pistoia, Angela 1 Schino, Jacopo 1 Stuart, Charles Alexander all top 5 Serials 6 Topological Methods in Nonlinear Analysis 5 Journal of Differential Equations 4 Archive for Rational Mechanics and Analysis 4 Nonlinear Analysis. Theory, Methods & Applications 3 Differential and Integral Equations 3 Calculus of Variations and Partial Differential Equations 3 Journal of Fixed Point Theory and Applications 2 Journal of Mathematical Analysis and Applications 2 Journal of Functional Analysis 2 Mathematica Scandinavica 2 Proceedings of the American Mathematical Society 2 Transactions of the American Mathematical Society 2 Annales de l’Institut Henri Poincaré. Analyse Non Linéaire 2 NoDEA. Nonlinear Differential Equations and Applications 2 Discrete and Continuous Dynamical Systems 2 Bulletin de l’Académie Polonaise des Sciences, Série des Sciences Mathématiques, Astronomiques et Physiques 1 American Mathematical Monthly 1 Applicable Analysis 1 Journal d’Analyse Mathématique 1 Studia Mathematica 1 Annali di Matematica Pura ed Applicata. Serie Quarta 1 Annales des Sciences Mathématiques du Québec 1 Bulletin de la Société Mathématique de France 1 Mathematische Annalen 1 Mathematische Zeitschrift 1 Rendiconti di Matematica e delle sue Applicazioni. Serie VII 1 IMRN. International Mathematics Research Notices 1 SIAM Journal on Mathematical Analysis 1 Advances in Differential Equations 1 Rapport. Séminaire de Mathématique. Nouvelle Série 1 Boletín de la Sociedad Matemática Mexicana. Third Series 1 Communications in Contemporary Mathematics 1 Advanced Nonlinear Studies 1 Complex Variables and Elliptic Equations 1 Analysis and Mathematical Physics all top 5 Fields 57 Partial differential equations (35-XX) 29 Global analysis, analysis on manifolds (58-XX) 14 Dynamical systems and ergodic theory (37-XX) 13 Ordinary differential equations (34-XX) 7 Operator theory (47-XX) 6 Calculus of variations and optimal control; optimization (49-XX) 5 Quantum theory (81-XX) 4 Algebraic topology (55-XX) 4 Optics, electromagnetic theory (78-XX) 3 General topology (54-XX) 3 Mechanics of particles and systems (70-XX) 2 Manifolds and cell complexes (57-XX) 1 Real functions (26-XX) 1 Potential theory (31-XX) 1 Functional analysis (46-XX) 1 Convex and discrete geometry (52-XX) 1 Mechanics of deformable solids (74-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 68 Publications have been cited 2,944 times in 1,996 Documents Cited by ▼ Year ▼ Ground state solutions for some indefinite variational problems. Zbl 1178.35352 Szulkin, Andrzej; Weth, Tobias 359 2009 The method of Nehari manifold. Zbl 1218.58010 Szulkin, Andrzej; Weth, Tobias 324 2010 Generalized linking theorem with an application to a semilinear Schrödinger equation. Zbl 0947.35061 Kryszewski, Wojciech; Szulkin, Andrzej 255 1998 Minimax principles for lower semicontinuous functions and applications to nonlinear boundary value problems. Zbl 0612.58011 Szulkin, Andrzej 185 1986 An asymptotically periodic Schrödinger equation with indefinite linear part. Zbl 1056.35065 Li, Gongbao; Szulkin, Andrzej 136 2002 Bound states for semilinear Schrödinger equations with sign-changing potential. Zbl 1119.35082 Ding, Yanheng; Szulkin, Andrzej 128 2007 Multiple solutions for a quasilinear Schrödinger equation. Zbl 1263.35113 Fang, Xiang-Dong; Szulkin, Andrzej 128 2013 A semilinear Schrödinger equation in the presence of a magnetic field. Zbl 1051.35082 Arioli, Gianni; Szulkin, Andrzej 125 2003 Homoclinic orbits for asymptotically linear Hamiltonian systems. Zbl 0984.37072 Szulkin, Andrzej; Zou, Wenming 120 2001 Ljusternik-Schnirelmann theory on \(C^ 1\)-manifolds. Zbl 0661.58009 Szulkin, Andrzej 108 1988 On symmetric solutions of an elliptic equation with a nonlinearity involving critical Sobolev exponent. Zbl 0823.35051 Bianchi, Gabriele; Chabrowski, Jan; Szulkin, Andrzej 89 1995 Multiple solutions to logarithmic Schrödinger equations with periodic potential. Zbl 1326.35358 Squassina, Marco; Szulkin, Andrzej 88 2015 An infinite dimensional Morse theory with applications. Zbl 0892.58015 Kryszewski, Wojciech; Szulkin, Andrzej 77 1997 A logarithmic Schrödinger equation with asymptotic conditions on the potential. Zbl 1333.35010 Ji, Chao; Szulkin, Andrzej 58 2016 Eigenvalue problems with indefinite weight. Zbl 0931.35121 Szulkin, Andrzej; Willem, Michel 54 1999 On a semilinear Schrödinger equation with critical Sobolev exponent. Zbl 0984.35150 Chabrowski, Jan; Szulkin, Andrzej 54 2002 Cohomology and Morse theory for strongly indefinite functionals. Zbl 0735.58012 Szulkin, Andrzej 52 1992 On the Schrödinger equation involving a critical Sobolev exponent and magnetic field. Zbl 1176.35022 Chabrowski, Jan; Szulkin, Andrzej 45 2005 A relative category and applications to critical point theory for strongly indefinite functionals. Zbl 0719.58011 Szulkin, Andrzej 36 1990 Positive solutions of variational inequalities: A degree-theoretic approach. Zbl 0535.35029 Szulkin, Andrzej 33 1985 Morse theory and existence of periodic solutions of convex Hamiltonian systems. Zbl 0669.58004 Szulkin, Andrzej 31 1988 \(p\)-Laplacian problems where the nonlinearity crosses an eigenvalue. Zbl 1094.35052 Perera, Kanishka; Szulkin, Andrzej 30 2005 An index theory and existence of multiple brake orbits for star-shaped Hamiltonian systems. Zbl 0642.58030 Szulkin, Andrzej 29 1989 Homoclinic solutions of Hamiltonian systems with symmetry. Zbl 0944.37030 Arioli, Gianni; Szulkin, Andrzej 29 1999 A simple variational approach to weakly coupled competitive elliptic systems. Zbl 1422.35043 Clapp, Mónica; Szulkin, Andrzej 25 2019 Infinite dimensional cohomology groups and periodic solutions of asymptotically linear Hamiltonian systems. Zbl 0997.37040 Szulkin, Andrzej; Zou, Wenming 19 2001 Hamiltonian systems: Periodic and homoclinic solutions by variational methods. Zbl 1090.37045 Bartsch, Thomas; Szulkin, Andrzej 17 2005 Periodic solutions of an asymptotically linear wave equation. Zbl 0798.35103 Li, S.; Szulkin, A. 15 1993 Ground state solutions for a semilinear problem with critical exponent. Zbl 1240.35205 Szulkin, Andrzej; Weth, Tobias; Willem, Michel 15 2009 Existence and number of solutions for a class of semilinear Schrödinger equations. Zbl 1131.35332 Ding, Yanheng; Szulkin, Andrzej 15 2006 Multiple solutions to a nonlinear curl-curl problem in \({\mathbb{R}}^3\). Zbl 1436.35108 Mederski, Jarosław; Schino, Jacopo; Szulkin, Andrzej 15 2020 Periodic solutions for a class of nonautonomous Hamiltonian systems. Zbl 0807.58040 Li, Shujie; Szulkin, Andrzej 14 1994 Generalized Nehari manifold and semilinear Schrödinger equation with weak monotonicity condition on the nonlinear term. Zbl 1375.35119 De Paiva, Francisco Odair; Kryszewski, Wojciech; Szulkin, Andrzej 14 2017 Erratum to: “Multiple solutions to logarithmic Schrödinger equations with periodic potential”. Zbl 1417.35184 Squassina, Marco; Szulkin, Andrzej 12 2017 Multiple solutions to a nonlinear Schrödinger equation with Aharonov-Bohm magnetic potential. Zbl 1189.35302 Clapp, Mónica; Szulkin, Andrzej 12 2010 Infinite-dimensional homology and multibump solutions. Zbl 1189.58004 Kryszewski, Wojciech; Szulkin, Andrzej 12 2009 On a class of variational inequalities involving gradient operators. Zbl 0551.49008 Szulkin, Andrzej 11 1984 Bifurcation for strongly indefinite functionals and a Liapunov type theorem for Hamiltonian systems. Zbl 0841.34045 Szulkin, Andrzej 11 1994 Critical point theory of Ljusternik-Schnirelmann type and applications to partial differential equations. Zbl 0701.58016 Szulkin, Andrzej 11 1989 On the solvability of a class of semilinear variational inequalities. Zbl 0608.35003 Szulkin, Andrzej 10 1984 Periodic motions of an infinite lattice of particles: the strongly indefinite case. Zbl 1100.37503 Arioli, Gianni; Szulkin, Andrzej 10 1998 Homoclinic solutions for a class of systems of second order differential equations. Zbl 0857.34048 Arioli, G.; Szulkin, A. 9 1995 Infinitely many solutions for semilinear elliptic problems with sign-changing weight functions. Zbl 1298.35091 Jalilian, Yaghoub; Szulkin, Andrzej 9 2014 Phase separation, optimal partitions, and nodal solutions to the Yamabe equation on the sphere. Zbl 1475.35012 Clapp, Mónica; Saldaña, Alberto; Szulkin, Andrzej 9 2021 Periodic and Bloch solutions to a magnetic nonlinear Schrödinger equation. Zbl 1182.35203 Clapp, Mónica; Iturriaga, Renato; Szulkin, Andrzej 8 2009 Morse theory and nonlinear differential equations. Zbl 1236.58023 Bartsch, Thomas; Szulkin, Andrzej; Willem, Michel 8 2008 A concentration phenomenon for semilinear elliptic equations. Zbl 1266.35074 Ackermann, Nils; Szulkin, Andrzej 8 2013 Multibump solutions and critical groups. Zbl 1175.37066 Arioli, Gianni; Szulkin, Andrzej; Zou, Wenming 7 2009 Periodic solutions for a class of nonautonomous wave equations. Zbl 0879.35014 Li, Shujie; Szulkin, Andrzej 6 1996 Bifurcation from infinity for an asymptotically linear Schrödinger equation. Zbl 1318.35012 Kryszewski, Wojciech; Szulkin, Andrzej 6 2014 A supercritical elliptic problem in a cylindrical shell. Zbl 1319.35047 Clapp, Mónica; Szulkin, Andrzej 6 2014 Multiple solutions to nonlinear Schrödinger equations with singular electromagnetic potential. Zbl 1283.35119 Clapp, Mónica; Szulkin, Andrzej 6 2013 A Sobolev-type inequality for the curl operator and ground states for the curl-curl equation with critical Sobolev exponent. Zbl 1475.35332 Mederski, Jarosław; Szulkin, Andrzej 6 2021 Local structure of the zero-sets of differentiable mappings and application to bifurcation theory. Zbl 0435.58006 Szulkin, Andrzej 5 1979 Infinitely many solutions for some singular elliptic problems. Zbl 1270.49007 Szulkin, Andrzej; Waliullah, Shoyeb 5 2013 Schrödinger equation with multiparticle potential and critical nonlinearity. Zbl 1195.35145 Chabrowski, Jan; Szulkin, Andrzej; Willem, Michel 5 2009 Sign-changing and symmetry-breaking solutions to singular problems. Zbl 1388.35065 Szulkin, Andrzej; Waliullah, Shoyeb 5 2012 Index theories for indefinite functionals and applications. Zbl 0918.58017 Szulkin, A. 4 1997 An example concerning the topological character of the zero-set of a harmonic function. Zbl 0402.31007 Szulkin, Andrzej 3 1978 Solutions to indefinite weakly coupled cooperative elliptic systems. Zbl 1497.35171 Clapp, Mónica; Szulkin, Andrzej 3 2022 Ground states of critical and supercritical problems of Brezis-Nirenberg type. Zbl 1353.35140 Clapp, Mónica; Pistoia, Angela; Szulkin, Andrzej 3 2016 Semilinear elliptic equations in \(\mathbb{R} ^ N\) with almost periodic or unbounded forcing term. Zbl 0861.34023 Fournier, Gilles; Szulkin, Andrzej; Willem, Michel 2 1996 On the number of solutions of some semilinear elliptic boundary value problems. Zbl 0537.35034 Szulkin, Andrzej 2 1982 \(R^ 3\) is the union of disjoint circles. Zbl 0521.52011 Szulkin, Andrzej 2 1983 Minimax principles for a class of lower semicontinuous functions and applications to nonlinear boundary value problems. Zbl 0631.58002 Szulkin, Andrzej 2 1986 Non-variational weakly coupled elliptic systems. Zbl 1496.35196 Clapp, Mónica; Szulkin, Andrzej 2 2022 AR-spaces with continuum left and continuum right \(r\)-neighbours. Zbl 0273.54025 Szulkin, A. 1 1973 Configuration spaces and multiple positive solutions to a singularly perturbed elliptic system. Zbl 1545.35048 Clapp, Mónica; Saldaña, Alberto; Szulkin, Andrzej 1 2024 Configuration spaces and multiple positive solutions to a singularly perturbed elliptic system. Zbl 1545.35048 Clapp, Mónica; Saldaña, Alberto; Szulkin, Andrzej 1 2024 Solutions to indefinite weakly coupled cooperative elliptic systems. Zbl 1497.35171 Clapp, Mónica; Szulkin, Andrzej 3 2022 Non-variational weakly coupled elliptic systems. Zbl 1496.35196 Clapp, Mónica; Szulkin, Andrzej 2 2022 Phase separation, optimal partitions, and nodal solutions to the Yamabe equation on the sphere. Zbl 1475.35012 Clapp, Mónica; Saldaña, Alberto; Szulkin, Andrzej 9 2021 A Sobolev-type inequality for the curl operator and ground states for the curl-curl equation with critical Sobolev exponent. Zbl 1475.35332 Mederski, Jarosław; Szulkin, Andrzej 6 2021 Multiple solutions to a nonlinear curl-curl problem in \({\mathbb{R}}^3\). Zbl 1436.35108 Mederski, Jarosław; Schino, Jacopo; Szulkin, Andrzej 15 2020 A simple variational approach to weakly coupled competitive elliptic systems. Zbl 1422.35043 Clapp, Mónica; Szulkin, Andrzej 25 2019 Generalized Nehari manifold and semilinear Schrödinger equation with weak monotonicity condition on the nonlinear term. Zbl 1375.35119 De Paiva, Francisco Odair; Kryszewski, Wojciech; Szulkin, Andrzej 14 2017 Erratum to: “Multiple solutions to logarithmic Schrödinger equations with periodic potential”. Zbl 1417.35184 Squassina, Marco; Szulkin, Andrzej 12 2017 A logarithmic Schrödinger equation with asymptotic conditions on the potential. Zbl 1333.35010 Ji, Chao; Szulkin, Andrzej 58 2016 Ground states of critical and supercritical problems of Brezis-Nirenberg type. Zbl 1353.35140 Clapp, Mónica; Pistoia, Angela; Szulkin, Andrzej 3 2016 Multiple solutions to logarithmic Schrödinger equations with periodic potential. Zbl 1326.35358 Squassina, Marco; Szulkin, Andrzej 88 2015 Infinitely many solutions for semilinear elliptic problems with sign-changing weight functions. Zbl 1298.35091 Jalilian, Yaghoub; Szulkin, Andrzej 9 2014 Bifurcation from infinity for an asymptotically linear Schrödinger equation. Zbl 1318.35012 Kryszewski, Wojciech; Szulkin, Andrzej 6 2014 A supercritical elliptic problem in a cylindrical shell. Zbl 1319.35047 Clapp, Mónica; Szulkin, Andrzej 6 2014 Multiple solutions for a quasilinear Schrödinger equation. Zbl 1263.35113 Fang, Xiang-Dong; Szulkin, Andrzej 128 2013 A concentration phenomenon for semilinear elliptic equations. Zbl 1266.35074 Ackermann, Nils; Szulkin, Andrzej 8 2013 Multiple solutions to nonlinear Schrödinger equations with singular electromagnetic potential. Zbl 1283.35119 Clapp, Mónica; Szulkin, Andrzej 6 2013 Infinitely many solutions for some singular elliptic problems. Zbl 1270.49007 Szulkin, Andrzej; Waliullah, Shoyeb 5 2013 Sign-changing and symmetry-breaking solutions to singular problems. Zbl 1388.35065 Szulkin, Andrzej; Waliullah, Shoyeb 5 2012 The method of Nehari manifold. Zbl 1218.58010 Szulkin, Andrzej; Weth, Tobias 324 2010 Multiple solutions to a nonlinear Schrödinger equation with Aharonov-Bohm magnetic potential. Zbl 1189.35302 Clapp, Mónica; Szulkin, Andrzej 12 2010 Ground state solutions for some indefinite variational problems. Zbl 1178.35352 Szulkin, Andrzej; Weth, Tobias 359 2009 Ground state solutions for a semilinear problem with critical exponent. Zbl 1240.35205 Szulkin, Andrzej; Weth, Tobias; Willem, Michel 15 2009 Infinite-dimensional homology and multibump solutions. Zbl 1189.58004 Kryszewski, Wojciech; Szulkin, Andrzej 12 2009 Periodic and Bloch solutions to a magnetic nonlinear Schrödinger equation. Zbl 1182.35203 Clapp, Mónica; Iturriaga, Renato; Szulkin, Andrzej 8 2009 Multibump solutions and critical groups. Zbl 1175.37066 Arioli, Gianni; Szulkin, Andrzej; Zou, Wenming 7 2009 Schrödinger equation with multiparticle potential and critical nonlinearity. Zbl 1195.35145 Chabrowski, Jan; Szulkin, Andrzej; Willem, Michel 5 2009 Morse theory and nonlinear differential equations. Zbl 1236.58023 Bartsch, Thomas; Szulkin, Andrzej; Willem, Michel 8 2008 Bound states for semilinear Schrödinger equations with sign-changing potential. Zbl 1119.35082 Ding, Yanheng; Szulkin, Andrzej 128 2007 Existence and number of solutions for a class of semilinear Schrödinger equations. Zbl 1131.35332 Ding, Yanheng; Szulkin, Andrzej 15 2006 On the Schrödinger equation involving a critical Sobolev exponent and magnetic field. Zbl 1176.35022 Chabrowski, Jan; Szulkin, Andrzej 45 2005 \(p\)-Laplacian problems where the nonlinearity crosses an eigenvalue. Zbl 1094.35052 Perera, Kanishka; Szulkin, Andrzej 30 2005 Hamiltonian systems: Periodic and homoclinic solutions by variational methods. Zbl 1090.37045 Bartsch, Thomas; Szulkin, Andrzej 17 2005 A semilinear Schrödinger equation in the presence of a magnetic field. Zbl 1051.35082 Arioli, Gianni; Szulkin, Andrzej 125 2003 An asymptotically periodic Schrödinger equation with indefinite linear part. Zbl 1056.35065 Li, Gongbao; Szulkin, Andrzej 136 2002 On a semilinear Schrödinger equation with critical Sobolev exponent. Zbl 0984.35150 Chabrowski, Jan; Szulkin, Andrzej 54 2002 Homoclinic orbits for asymptotically linear Hamiltonian systems. Zbl 0984.37072 Szulkin, Andrzej; Zou, Wenming 120 2001 Infinite dimensional cohomology groups and periodic solutions of asymptotically linear Hamiltonian systems. Zbl 0997.37040 Szulkin, Andrzej; Zou, Wenming 19 2001 Eigenvalue problems with indefinite weight. Zbl 0931.35121 Szulkin, Andrzej; Willem, Michel 54 1999 Homoclinic solutions of Hamiltonian systems with symmetry. Zbl 0944.37030 Arioli, Gianni; Szulkin, Andrzej 29 1999 Generalized linking theorem with an application to a semilinear Schrödinger equation. Zbl 0947.35061 Kryszewski, Wojciech; Szulkin, Andrzej 255 1998 Periodic motions of an infinite lattice of particles: the strongly indefinite case. Zbl 1100.37503 Arioli, Gianni; Szulkin, Andrzej 10 1998 An infinite dimensional Morse theory with applications. Zbl 0892.58015 Kryszewski, Wojciech; Szulkin, Andrzej 77 1997 Index theories for indefinite functionals and applications. Zbl 0918.58017 Szulkin, A. 4 1997 Periodic solutions for a class of nonautonomous wave equations. Zbl 0879.35014 Li, Shujie; Szulkin, Andrzej 6 1996 Semilinear elliptic equations in \(\mathbb{R} ^ N\) with almost periodic or unbounded forcing term. Zbl 0861.34023 Fournier, Gilles; Szulkin, Andrzej; Willem, Michel 2 1996 On symmetric solutions of an elliptic equation with a nonlinearity involving critical Sobolev exponent. Zbl 0823.35051 Bianchi, Gabriele; Chabrowski, Jan; Szulkin, Andrzej 89 1995 Homoclinic solutions for a class of systems of second order differential equations. Zbl 0857.34048 Arioli, G.; Szulkin, A. 9 1995 Periodic solutions for a class of nonautonomous Hamiltonian systems. Zbl 0807.58040 Li, Shujie; Szulkin, Andrzej 14 1994 Bifurcation for strongly indefinite functionals and a Liapunov type theorem for Hamiltonian systems. Zbl 0841.34045 Szulkin, Andrzej 11 1994 Periodic solutions of an asymptotically linear wave equation. Zbl 0798.35103 Li, S.; Szulkin, A. 15 1993 Cohomology and Morse theory for strongly indefinite functionals. Zbl 0735.58012 Szulkin, Andrzej 52 1992 A relative category and applications to critical point theory for strongly indefinite functionals. Zbl 0719.58011 Szulkin, Andrzej 36 1990 An index theory and existence of multiple brake orbits for star-shaped Hamiltonian systems. Zbl 0642.58030 Szulkin, Andrzej 29 1989 Critical point theory of Ljusternik-Schnirelmann type and applications to partial differential equations. Zbl 0701.58016 Szulkin, Andrzej 11 1989 Ljusternik-Schnirelmann theory on \(C^ 1\)-manifolds. Zbl 0661.58009 Szulkin, Andrzej 108 1988 Morse theory and existence of periodic solutions of convex Hamiltonian systems. Zbl 0669.58004 Szulkin, Andrzej 31 1988 Minimax principles for lower semicontinuous functions and applications to nonlinear boundary value problems. Zbl 0612.58011 Szulkin, Andrzej 185 1986 Minimax principles for a class of lower semicontinuous functions and applications to nonlinear boundary value problems. Zbl 0631.58002 Szulkin, Andrzej 2 1986 Positive solutions of variational inequalities: A degree-theoretic approach. Zbl 0535.35029 Szulkin, Andrzej 33 1985 On a class of variational inequalities involving gradient operators. Zbl 0551.49008 Szulkin, Andrzej 11 1984 On the solvability of a class of semilinear variational inequalities. Zbl 0608.35003 Szulkin, Andrzej 10 1984 \(R^ 3\) is the union of disjoint circles. Zbl 0521.52011 Szulkin, Andrzej 2 1983 On the number of solutions of some semilinear elliptic boundary value problems. Zbl 0537.35034 Szulkin, Andrzej 2 1982 Local structure of the zero-sets of differentiable mappings and application to bifurcation theory. Zbl 0435.58006 Szulkin, Andrzej 5 1979 An example concerning the topological character of the zero-set of a harmonic function. Zbl 0402.31007 Szulkin, Andrzej 3 1978 AR-spaces with continuum left and continuum right \(r\)-neighbours. Zbl 0273.54025 Szulkin, A. 1 1973 all cited Publications top 5 cited Publications all top 5 Cited by 1,531 Authors 92 Tang, Xianhua 59 Alves, Claudianor Oliveira 55 Ding, Yanheng 45 Zhang, Jian 40 Zhang, Fubao 37 Zou, Wenming 36 Zhang, Wen 35 Ambrosio, Vincenzo 33 Tang, Chun-Lei 29 Szulkin, Andrzej 27 Ji, Chao 27 Rădulescu, Vicenţiu D. 26 Figueiredo, Giovany Malcher 26 Miyagaki, Olimpio Hiroshi 25 Wang, Jun 25 Xu, Junxiang 22 Chen, Haibo 22 Huang, Yisheng 21 Zhao, Fukun 20 Clapp, Mónica 20 Li, Quanqing 20 Wu, Xian 20 Yang, Minbo 19 Ma, Shiwang 19 Mederski, Jarosław 19 Zhang, Hui 18 Papageorgiou, Nikolaos S. 18 Wang, Zhi-Qiang 17 Chen, Sitong 16 Chen, Peng 16 Qin, Dongdong 16 Squassina, Marco 15 Liu, Hui 15 Long, Yiming 14 Chen, Guanwei 14 Chen, Jianhua 14 Da Silva, Edcarlos Domingos 14 Liang, Sihua 13 Bieganowski, Bartosz 13 Deng, Zhiying 13 Lin, Xiaoyan 13 Liu, Chungen 13 Perera, Kanishka 13 Schechter, Martin 13 Wang, Wenbo 13 Zhang, Duanzhi 12 Bartsch, Thomas J. 12 Do Ó, João M. Bezerra 12 Wang, Wei 12 Yu, Yuanyang 11 Degiovanni, Marco 11 Fonda, Alessandro 11 Motreanu, Dumitru 11 Pimenta, Marcos T. O. 11 Sun, Jijiang 11 Zhang, Binlin 10 Candela, Anna Maria 10 Deng, Yinbin 10 Guo, Yuxia 10 Jebelean, Petru 10 Liu, Shibo 10 Rybicki, Sławomir Maciej 10 Tang, Zhongwei 10 Xu, Tian 10 Zhang, Youpei 10 Zhao, Leiga 10 Zhao, Peihao 9 Batkam, Cyril Joel 9 Chen, Shaowei 9 Dai, Guowei 9 Fang, Xiangdong 9 Isernia, Teresa 9 Jeanjean, Louis 9 Jia, Gao 9 Li, Gongbao 9 Li, Yongqing 9 Liu, Haidong 9 Mao, Anmin 9 Moameni, Abbas 9 Salvatore, Addolorata 9 Secchi, Simone 9 Weth, Tobias 9 Yu, Jian-She 9 Zhou, Jun 8 Bereanu, Cristian 8 Carrião, Paulo Cesar 8 Du, Miao 8 El Khalil, Abdelouahed 8 Huang, Xianjiu 8 Kim, Yunho 8 Liao, Fangfang 8 Maia, Liliane A. 8 Pankov, Alexander A. 8 Pistoia, Angela 8 Pucci, Patrizia 8 Serban, Calin-Constantin 8 Song, Yueqiang 8 Sun, Juntao 8 Touzani, Abdelfattah 8 Zhang, Chengxiang ...and 1,431 more Authors all top 5 Cited in 218 Serials 163 Journal of Mathematical Analysis and Applications 163 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 128 Journal of Differential Equations 76 Calculus of Variations and Partial Differential Equations 63 Boundary Value Problems 55 Mathematical Methods in the Applied Sciences 46 Journal of Mathematical Physics 46 Communications on Pure and Applied Analysis 43 ZAMP. Zeitschrift für angewandte Mathematik und Physik 38 The Journal of Geometric Analysis 37 Complex Variables and Elliptic Equations 35 Applicable Analysis 34 NoDEA. Nonlinear Differential Equations and Applications 33 Applied Mathematics Letters 32 Journal of Functional Analysis 31 Advances in Nonlinear Analysis 29 Discrete and Continuous Dynamical Systems 28 Advanced Nonlinear Studies 27 Annali di Matematica Pura ed Applicata. Serie Quarta 26 Journal of Fixed Point Theory and Applications 25 Nonlinear Analysis. Real World Applications 23 Computers & Mathematics with Applications 23 Abstract and Applied Analysis 20 Mediterranean Journal of Mathematics 19 Nonlinearity 19 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 19 Communications in Contemporary Mathematics 19 Nonlinear Analysis. Theory, Methods & Applications 18 Topological Methods in Nonlinear Analysis 18 Electronic Journal of Differential Equations (EJDE) 15 Mathematische Nachrichten 15 Proceedings of the American Mathematical Society 13 Archive for Rational Mechanics and Analysis 13 Acta Mathematica Scientia. Series B. (English Edition) 13 Science China. Mathematics 12 Advances in Difference Equations 12 Journal of Applied Analysis and Computation 11 Asymptotic Analysis 10 Applied Mathematics and Computation 10 Manuscripta Mathematica 10 Acta Mathematica Sinica. English Series 10 Qualitative Theory of Dynamical Systems 9 Rocky Mountain Journal of Mathematics 9 Results in Mathematics 9 Annales de l’Institut Henri Poincaré. Analyse Non Linéaire 9 European Series in Applied and Industrial Mathematics (ESAIM): Control, Optimization and Calculus of Variations 9 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 9 Milan Journal of Mathematics 9 Analysis and Mathematical Physics 8 Israel Journal of Mathematics 8 Proceedings of the Edinburgh Mathematical Society. Series II 8 Transactions of the American Mathematical Society 8 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 7 Acta Applicandae Mathematicae 7 Journal of Inequalities and Applications 7 Boletim da Sociedade Paranaense de Matemática. Terceira Série 7 Discrete and Continuous Dynamical Systems. Series S 7 Journal of Function Spaces 7 Minimax Theory and its Applications 7 Korean Journal of Mathematics 7 AIMS Mathematics 6 Mathematische Annalen 6 Communications in Partial Differential Equations 6 Journal de Mathématiques Pures et Appliquées. Neuvième Série 6 SIAM Journal on Mathematical Analysis 6 Potential Analysis 6 Discrete and Continuous Dynamical Systems. Series B 6 Journal of Applied Mathematics and Computing 6 Open Mathematics 6 SN Partial Differential Equations and Applications 5 Advances in Mathematics 5 Monatshefte für Mathematik 5 Rendiconti del Circolo Matemàtico di Palermo. Serie II 5 Acta Mathematicae Applicatae Sinica. English Series 5 Journal of Global Optimization 5 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 5 Journal of Dynamics and Differential Equations 5 Comptes Rendus. Mathématique. Académie des Sciences, Paris 5 Moroccan Journal of Pure and Applied Analysis 5 Journal of Elliptic and Parabolic Equations 4 Indian Journal of Pure & Applied Mathematics 4 Applied Mathematics and Optimization 4 Mathematische Zeitschrift 4 Zeitschrift für Analysis und ihre Anwendungen 4 Chinese Annals of Mathematics. Series B 4 Georgian Mathematical Journal 4 Bulletin des Sciences Mathématiques 4 Journal of Difference Equations and Applications 4 Taiwanese Journal of Mathematics 4 Communications in Nonlinear Science and Numerical Simulation 4 Journal of the Australian Mathematical Society 4 Journal of Applied Mathematics 4 Communications in Analysis and Mechanics 3 Communications on Pure and Applied Mathematics 3 Journal d’Analyse Mathématique 3 Chaos, Solitons and Fractals 3 Bulletin of the London Mathematical Society 3 Journal of Optimization Theory and Applications 3 Studies in Applied Mathematics 3 Bulletin of the Iranian Mathematical Society ...and 118 more Serials all top 5 Cited in 42 Fields 1,603 Partial differential equations (35-XX) 365 Global analysis, analysis on manifolds (58-XX) 240 Dynamical systems and ergodic theory (37-XX) 196 Ordinary differential equations (34-XX) 181 Operator theory (47-XX) 176 Calculus of variations and optimal control; optimization (49-XX) 71 Mechanics of particles and systems (70-XX) 55 Functional analysis (46-XX) 52 Quantum theory (81-XX) 45 Difference and functional equations (39-XX) 44 Differential geometry (53-XX) 43 Optics, electromagnetic theory (78-XX) 25 Real functions (26-XX) 17 Convex and discrete geometry (52-XX) 14 Algebraic topology (55-XX) 13 Mechanics of deformable solids (74-XX) 11 Integral equations (45-XX) 11 Statistical mechanics, structure of matter (82-XX) 10 Manifolds and cell complexes (57-XX) 9 Potential theory (31-XX) 9 Numerical analysis (65-XX) 7 Fluid mechanics (76-XX) 6 Relativity and gravitational theory (83-XX) 4 Probability theory and stochastic processes (60-XX) 4 Operations research, mathematical programming (90-XX) 3 Linear and multilinear algebra; matrix theory (15-XX) 3 \(K\)-theory (19-XX) 3 Measure and integration (28-XX) 3 General topology (54-XX) 3 Biology and other natural sciences (92-XX) 2 Combinatorics (05-XX) 2 Algebraic geometry (14-XX) 2 Topological groups, Lie groups (22-XX) 2 Functions of a complex variable (30-XX) 2 Special functions (33-XX) 1 History and biography (01-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Approximations and expansions (41-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Abstract harmonic analysis (43-XX) 1 Integral transforms, operational calculus (44-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Citations by Year