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58E05 Abstract critical point theory (Morse theory, Ljusternik-Schnirelman (Lyusternik-Shnirelman) theory, etc.) (35 articles)

• Laghzal, Mohamed; Khalil, Abdelouahed El; Touzani, Abdelfattah: A Weighted Eigenvalue Problems Driven by both $p(\cdot )$-Harmonic and $p(\cdot )$-Biharmonic Operators. (English). Communications in Mathematics, vol. 29 (2021), issue 3, pp. 443-455
• Afrouzi, Ghasem A.; Shokooh, Shaeid; Chung, Nguyen T.: Infinitely many weak solutions for a non-homogeneous Neumann problem in Orlicz--Sobolev spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 60 (2019), issue 3, pp. 361-378
• Vannella, Giuseppina: Multiple positive solutions for a p-Laplace critical problem (p >1), via Morse theory. (English). In: Mikula, Karol (ed.): Proceedings of Equadiff 14. Conference on Differential Equations and Their Applications, Bratislava, July 24-28, 2017. Slovak University of Technology in Bratislava, SPEKTRUM STU Publishing, Bratislava, 2017. pp. 89-96
• Shahrokhi-Dehkordi, M.S.: On a class of $(p,q)$-Laplacian problems involving the critical Sobolev-Hardy exponents in starshaped domain. (English). Communications in Mathematics, vol. 25 (2017), issue 1, pp. 13-20
• Boucenna, A.; Moussaoui, T.: Existence Results for a Fractional Boundary Value Problem via Critical Point Theory. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 54 (2015), issue 1, pp. 47-64
• Gelbukh, Irina: Close cohomologous Morse forms with compact leaves. (English). Czechoslovak Mathematical Journal, vol. 63 (2013), issue 2, pp. 515-528
• Zhang, Qiongfen; Tang, X. H.: Periodic solutions for second order Hamiltonian systems. (English). Applications of Mathematics, vol. 57 (2012), issue 4, pp. 407-425
• Wang, Libo; Ge, Weigao; Pei, Minghe: Infinitely many solutions of a second-order $p$-Laplacian problem with impulsive condition. (English). Applications of Mathematics, vol. 55 (2010), issue 5, pp. 405-418
• Mihăilescu, Mihai: On a class of nonlinear problems involving a $p(x)$-Laplace type operator. (English). Czechoslovak Mathematical Journal, vol. 58 (2008), issue 1, pp. 155-172
• Berti, Massimiliano: Nonlinear oscillations of completely resonant wave equations. (English). In: Fila, Marek, Handlovičová, A., Mikula, K., Medveď, Milan, Quittner, Pavol and Ševčovič, Daniel (eds.): Proceedings of Equadiff 11, International Conference on Differential Equations. Czecho-Slovak series, Bratislava, July 25-29, 2005. [Part 2] Minisymposia and contributed talks. Comenius University Press, Bratislava, 2007. pp. 9-16
• Marano, Salvatore A.; Motreanu, Dumitru: A critical point result for non-differentiable indefinite functionals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 45 (2004), issue 4, pp. 663-679
• Kristály, Alexandru; Varga, Csaba: Location of min-max critical points for multivalued functionals. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 42 (2001), issue 2, pp. 59-68
• Zając, Mariusz: On singularities of almost periodic functions. (English). In: Slovák, Jan and Čadek, Martin (eds.): Proceedings of the 20th Winter School "Geometry and Physics". Circolo Matematico di Palermo, Palermo, 2001. pp. 207-211
• Binding, Paul A.; Drábek, Pavel; Huang, Yin Xi: Positive solutions of critical quasilinear elliptic equations in $R \sp N$. (English). Mathematica Bohemica, vol. 124 (1999), issue 2, pp. 149-166
• Shibata, Tetsutaro: Spectral asymptotics for nonlinear multiparameter problems with indefinite nonlinearities. (English). Czechoslovak Mathematical Journal, vol. 49 (1999), issue 2, pp. 317-340
• Szulkin, Andrzej: Generalized linking theorem and nonlinear equations in unbounded domains. (English). In: Agarwal, Ravi P., Neuman, F. and Vosmanský, J. (eds.): Proceedings of Equadiff 9, Conference on Differential Equations and Their Applications, Brno, August 25-29, 1997. [Part 1] Survey papers. Masaryk University, Brno, 1998. pp. 159-168
• Huang, Wenxue: On closed 4-manifolds admitting a Morse function with 4 critical points. (English). Czechoslovak Mathematical Journal, vol. 46 (1996), issue 1, pp. 47-59
• Huang, Yin Xi: Eigenvalues of the $p$-Laplacian in ${\boldkey R}^N$ with indefinite weight. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 36 (1995), issue 3, pp. 519-527
• Fečkan, Michal: Equivalence and zero sets of certain maps in infinite dimensions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 34 (1993), issue 4, pp. 645-655
• Szulkin, A.: Hamiltonian systems with periodic nonlinearities. (English). In: Kurzweil, Jaroslav (ed.): Equadiff 7. Proceedings of the 7th Czechoslovak Conference on Differential Equations and Their Applications held in Prague, 1989. BSB B.G. Teubner Verlagsgesellschaft, Leipzig, 1990. pp. 131-134
• Feireisl, Eduard: Free vibrations for the equation of a rectangular thin plate. (English). Aplikace matematiky, vol. 33 (1988), issue 2, pp. 81-93
• Feireisl, Eduard: On the existence of free vibrations for a beam equation when the period is an irrational multiple of the length. (English). Aplikace matematiky, vol. 33 (1988), issue 2, pp. 94-102
• Feireisl, Eduard: On the existence of periodic solutions of a semilinear wave equation with a superlinear forcing term. (English). Czechoslovak Mathematical Journal, vol. 38 (1988), issue 1, pp. 78-87
• Greco, Carlo: Remarks on periodic solutions, with prescribed energy, for singular Hamiltonian systems. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 28 (1987), issue 4, pp. 661-672
• Mawhin, Jean: Critical point theory and nonlinear differential equations. (English). In: Vosmanský, Jaromír and Zlámal, Miloš (eds.): Equadiff 6. Proceedings of the International Conference on Differential Equations and Their Applications held in Brno, Czechoslovakia, Aug. 26 - 30, 1985. J. E. Purkyně University, Department of Mathematics, Brno, 1986. pp. 49-58
• Kung-Ching Chang: On the mountain pass lemma. (English). In: Vosmanský, Jaromír and Zlámal, Miloš (eds.): Equadiff 6. Proceedings of the International Conference on Differential Equations and Their Applications held in Brno, Czechoslovakia, Aug. 26 - 30, 1985. J. E. Purkyně University, Department of Mathematics, Brno, 1986. pp. [203]-208
• Fučík, Svatopluk; Kučera, Milan; Nečas, Jindřich; Souček, Jiří; Souček, Vladimír: Morse-Sard theorem in infinite dimensional Banach spaces and investigation of the set of all critical levels. (English). Časopis pro pěstování matematiky, vol. 99 (1974), issue 3, pp. 217-243
• Souček, Jiří; Souček, Vladimír: On the spectrum of a nonlinear operator. (English). Czechoslovak Mathematical Journal, vol. 24 (1974), issue 4, pp. 614-663
• Potapov, Alexandr S.: К теории вращения предельно компактных векторных полей. (Russian) [On the theory of the rotation of ultimately compact vector fields]. Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 4, pp. 693-716
• Petry, Walter: Nonlinear eigenvalue problems. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 14 (1973), issue 1, pp. 113-126
• Naumann, Joachim: A characterization of the eigenvalues of a completely continuous selfadjoint operator. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 13 (1972), issue 1, pp. 63-78
• Faust, D. D.: The existence of polar non-degenerate functions on a topological manifold. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 13 (1972), issue 1, pp. 149-161
• Nečas, Jindřich: Remark on the Fredholm alternative for nonlinear operators with application to nonlinear integral equations of generalized Hammerstein type. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 13 (1972), issue 1, pp. 109-120
• Fučík, Svatopluk; Nečas, Jindřich: Spectral theory of nonlinear operators. (English). In: Ráb, Miloš and Vosmanský, Jaromír (eds.): Proceedings of Equadiff III. 3rd Czechoslovak Conference on Differential Equations and Their Applications. Brno, Czechoslovakia, August 28 - September 1, 1972. Univ. J. E. Purkyně - Přírodovědecká fakulta, Brno, 1973. pp. 163-174
• Fučík, Svatopluk; Nečas, Jindřich; Souček, Jiří; Souček, Vladimír: Strengthening upper bound for the number of critical levels of nonlinear functionals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 13 (1972), issue 2, pp. 297-310