Publications
·
86. Daniele Cassani,
Bernhard Ruf, Cristina Tarsi, Optimal Sobolev Type
Inequalities in Lorentz Spaces, Potential Anal, DOI 10.1007/s11118-012-9329-2
·
85. Group
invariance and Pohozaev identity in Moser-type
inequalities, Communications in Contemporary Mathematics Vol. 15, No. 2
(2013)
·
84. Yuanyun Li, B. Ruf, Q. Guo, P. Niu, Quasilinear elliptic problems with combined critical Sobolev-Hardy terms, Annali di Matematica 192 (2013), 93–113
·
83. Y. Ding, Ruf, B. Existence and concentration of
semi-classical solutions for Dirac equations with critical nonlinearities, SIAM
J. MATH. ANAL. Vol. 44, No. 6, pp. 3755–3785
·
82. Agudelo, Oscar; Ruf, Bernhard; Vélez, Carlos, On a nonlinear elliptic system with
symmetric coupling, Nonlinear Anal. 75 (2012), 4315–4324.
·
81. Ruf, B., On the Fučík
Spectrum for Equations with Symmetries, Contemp. Math., 540, (2011), Amer. Math. Soc.,
Providence, RI, 15-34
- 80. de Figueiredo, D.G., do O’, J.M., Ruf,
B., Elliptic equations and systems
with critical Trudinger-Moser inequalities (in
honor of L. Nirenberg), Discr.
Cont. Dyn. Systems –A, 30, (2011), no. 2, 455–476
- 79. Ruf, B., Sani, F., On a Adams type inequality in R^2m,
Transactions AMS (to appear)
- 78. Ding,
Y.H., Lee, C., Ruf, B., Semi-classical states of a Dirac equation, Proc. Royal Soc. Edinb (to appear)
- 77. Musso, M., del Pino, M., Ruf, B., Beyond
the Trudinger-Moser supremum,
Calc.
Var. Partial Differential Equations 44 (2012), no. 3-4, 543–576
- 76, Torre,
F., Ruf, B., Multiplicity of
solutions for a superlinear p-Laplacian equation, Nonlinear Analysis TMA, 73
(2010), 2132-2147.
- 75. Chabrowski, J., Peral, I.,
Ruf, B., On an eigenvalue problem
involving the Hardy potential, Communications
in Contemporary Mathematics, Vol. 12, No.
6 (2010), 953–975
- 74. Calanchi, M, Ruf, B., Radial and non
radial solutions for Hardy-Henon type
elliptic systems, Calc. Var. 38 (2010), 111-133
- 73. Cassani,
D., Ruf, B., Tarsi, C., Best
constants in a borderline case of second-order Moser type inequalities, Ann. Institut H. Poincaré
– Analyse Nonlinéaire,
27 (2010), 73-93
- 72. Del Pino, M., Musso, M., Ruf,
B., New solutions for Trudinger–Moser critical equations in R^2, Journal of Functional Analysis 258
(2010), 421–457
- 71. Cassani, D., Ruf, B., Tarsi, C., Best constants for Trudinger-Moser type
inequalities in Zygmund spaces, Matematica Contemporanea, 36
(2009), 79-90
- 70. Massa, E., Ruf, B., On
the Fucik Spectrum for the Laplacian
on a Torus, Journal of Functional Analysis 256 (2009), 1432–1452
- 69. Lorca, S., Ruf, B., Ubilla, P., A priori bounds for superlinear
problems involving the N-Laplacian, Journal
of Differential Equations, 246 (2009), 2039-2054
- 68. De Figueiredo,
D.G., do Ó, J.M., Ruf, B., Non variational
elliptic systems in dimension two: a priori bounds and existence of
positive solutions , J. Fixed Point Theory and Appl., 4 (2008), 77-96
- 67. Ruf, B., Tarsi, C., On
Trudinger-Moser type inequalities involving Sobolev-Lorentz spaces, Annali
Mat. Pura ed Appl.,
188, (2009), 369-397,
- 66. Ruf,
B., Superlinear Elliptic Equations and
Systems, Handbook of Differential Equations, vol. 5, ed. M. Chipot, Elsevier, 2008
- 65. Ruf, B., Srikanth,
P.N., Singularly perturbed elliptic equations with solutions
concentrating on 1-dimensional orbits, JEMS 12, (2010), 413-427,
- 64. Ruf, B., Ubilla, P., On
a Liouville-type equation with sign-changing weight, Proceedings of
the Royal Society of Edinburg, Sect. A, 139 (2009), 183-192
- 63. Ding, Y., Ruf, B., Solutions
of a nonlinear Dirac equation in external fields, Archive Rat.
Mech. Analysis, 190 (2008), no. 1,
57-82
- 62. Massa, E., Ruf, B., A
Global Characterization of the Fucik Spectrum for a System of Ordinary
Differential Equations, J. Diff. Equ., 234 (2007), no. 1, 311-336
- 61. Li, Yuxiang, Ruf, B., A
sharp Trudinger-Moser type inequality for unbounded domains in R^n,
Indiana Univ. Math. J. 57, no. 1
(2008), 451-480
- 60. Chabrowski, J., Ruf,
B., On the critical Neumann problemn with perturbations of lower order,
Colloq. Math. 108 (2007), 225-246
- 59. De Figueiredo, D.G.,
do Ó, J.M., Ruf, B., Semilinear elliptic systems with exponential
nonlinearities in two dimensions, Advanced Nonlinear Studies 6,
(2006), 199-213
- 58. Ruf, B., On
elliptic equations and systems with critical growth in R^2, Tr. Mat.
Inst. Steklova 255 (2006), 234-243, Funkt. Prostran., Teor. Priblizh.,
Nelinein. Anal.
- 57. Ruf, B., Lorentz
spaces and Nonlinear Elliptic systems, Progr. Nonlin. Diff. Equ. 66
(2005), 471-489
- 56. Massa, Eugenio, and
Ruf, B., On the Fucik spectrum for elliptic systems, Top.
Meth. Nonlin. Analysis, 27, (2006), 195-228
- 55. De Figueiredo, D.G.,
Ruf, B., On elliptic systems with nonlinearities of arbitrary growth, Mediterranean
J. Math. 1, (2004), 417-431
- 54. De Figueiredo, D.G.,
do Ó, J.M., Ruf, B., An Orlicz space approach to superlinear elliptic
systems, J. Funct. Analysis, 224 (2005), 471-496
- 53. Zhang, Zh., Calanchi,
M., Ruf, B., Elliptic equations in R^2 with one-sided exponential
growth, Comm. Contemp. Math., 6 (2004), 1-25
- 52. Do Ó, J.M., Ruf, B., On
a Schrödinger equation with periodic potential and critical growth in R^2,
NoDEA, 13 (2006) 167–192
- 51. Ruf, B., A sharp
Trudinger-Moser type inequality for unbounded domains in R^2, J.
Funct. Analysis, 219 (2004), 340-367
- 50. De Figueiredo, D.G.,
do Ó, J.M., Ruf, B., Critical and subcritical elliptic systems in
dimension two, Indiana University Math. J. 53 (2004),1037-1054
- 49. Chabrowski, J., Ruf,
B., On the critical Neumann problem with weight in exterior
domains, Nonlinar Analysis TMA, 54 (2003), pp.143-163
- 48. Clapp, M., Kavian,
O., Ruf, B., Multiple solutions of nonhomogeneous elliptic
equations with critical nonlinearity on symmetric domains, Comm.
Contemp. Math. 2, (2003), 147-169,
- 47. Calanchi, M., Ruf,
B., Hilbert type numbers for polynomial ODE's, Proceedings Workshop
Bergamo, Progr. Nonlin. Diff. Equ. 54 (2003), 53-61
- 46. Ruf, B., Terraneo,
E., The Cauchy problem for a semilinear heat equation with singular
initial data, Progress in Nonlinear Diff. Equ., Vol. 50, (2002)
- 45. Calanchi, M., Ruf,
B., Elliptic equations with one-sided critical growth, Electron. J.
Diff. Eqns., Vol. 2002 (2002), No. 89, 1-21
- 44. De Figueiredo, D.G.,
Do Ó, J.M., Ruf, B., On an inequality by N. Trudinger and J. Moser and
a related elliptic equation, Comm. Pure Appl. Math. 55 (2002),
1-18
- 43. Ruf, B., On a
result by Carleson-Chang concerning the Trudinger-Moser inequality, Nonlinear Analysis
TMA, 47 (2001), 6041-6051
- 42. Calanchi, M., Ruf,
B., On the number of closed solutions for polynomial ODE's and a
special case of Hilbert's 16th problem, Advances in Diff. Equ.7
(2002), 197--216.
- 41. Ruf, B., Srikanth,
P.N., The Lorentz-Dirac equation II, Reviews in Math. Physics,
12 (2000), 1137-1157
- 40. Ruf, B., Srikanth,
P.N., The Lorentz-Dirac equation I, Reviews in Math. Physics, 12
(2000), 657-686
- 39. Ruf, B., Bounds on
the number of solutions of elliptic boundary value problems with
polynomial nonlinearities, J. Diff. Equ. 151, 1999, p. 111-133
- 38. Gazzola, F., Ruf, B.,
Lower order perturbations of critical growth nonlinearities in
semilinear elliptic PDE's, Adv. in Diff. Equ. 2, 1997, p.
555-572
- 37. Ruf, B., Singularity
Theory and Bifurcation Phenomena in Differential Equations, Top. Nonlinear
Anal., Birkhäuser, 104 p., 1997
- 36. Ruf, B., Borderline
problems in the calculus of variations, Rend. Sem. Mat. Fis., 64, 1994
- 35.
deFigueiredo, G., Ruf, B., Existence and non-existence of radial
solutions for elliptic equations with critical exponent in R^2, Comm.
Pure Appl. Math., 48, 1995
- 34. Arioli, G., Ruf, B., Periodic
solutions for a system of forced, nonlinearly coupled oscillators, with
applications to electrical circuits, Dynamic Systems Appl., 4, 1995
- 33. deFigueiredo, D.G.,
Miyagaki, O.H., Ruf, B., Elliptic equations in R^2 with nonlinearities
in the critical growth range, Calc. Var. and PDE, 3, 1995
- 32. Ruf, B., Higher
singularities in Banach space and forced secondary bifurcation, SIAM
J. Math. Anal. 9, 1995
- 31. Ruf, B., Srikanth,
P.N., On periodic motions of lattices of Toda type via critical point
theory, Arch. Rational Mech. Anal. 126, 1994
- 30. Ruf, B., Large
perturbations of Toda lattices, Proc. First World Congress Nonlin.
Analysis, 1993
- 29. Ruf, B., Perturbation
of symmetry and generalized mountain pass theorems, Proc. Conf. Var.
Methods, Erice, 1993
- 28. deFigueiredo, D.J.,
Ruf, B., On the periodic Fucik spectrum and a superlinear
Sturm-Liouville equation, Proc. Royal Soc. Edinb. 123A, 1993
- 27. Ruf, B., Forced
secondary bifucation in a nonlinear elliptic equation, Diff. Int. Equ.
5, 1992
- 26. Ruf, B., On a
surjectivity result for a superlinear Sturm-Liouville equation, Proc. Equadiff, Barcelona, 1991
- 25. Ruf, B., Butterflies
in Banach space and forced secondary bifurcation, Proc. Conf. Theory
Appl. Diff. Eqs, Edinburg, Texas, 1991
- 24. Ruf, B., Remarks
on a superlinear Sturm-Liouville equation, Proc. Conf. Elliptic and
Parabolic Equ., Pont-a-Mousson,
1991
- 23. deFigueiredo, D.J.,
Ruf, B., On a superlinear Sturm-Liouville equation and a related
bouncing problem, Journ. reine angew. Math. 441, 1991
- 22. Kappeler, Th., Ruf,
B., On the nodal line of the second eigenfunction
of an inhomogeneous membrane, Nonlinear Analysis TMA 15, 1990, 427-436
- 21. Ruf, B., On the nodal
line of eigenfunctions, Proceedings Equadiff 7, Prag, 1989
- 20. Ruf, B., On the
number of solutions of superlinear boundary value problems,
"Differential equations and applications", ed. A.R. Aftabizadeh,
Ohio Univ. Press, 1989
- 19. Ruf, B., Singularity
theory and the geometry of some nonlinear elliptic equation, Ann. Sc.
Norm. Sup. Pisa, Cl. Scienze, ser. 4, 17, 1990
- 18. Ruf, B., Singularity
theory and the bifurcation structure of a nonlinear elliptic equation,
"Differential Equations: Stability and Control", ed. S. Elaydi, Marcel Dekker, 1990
- 17. Kappeler, Th., Ruf,
B., On the nodal line of the second eigenfunction of elliptic operators
in two dimensions, Journ. Reine Angew. Math., 1989
- 16. Ruf, B., Multiplicity
and eigenvalue intersecting nonlinearities, ZAMP, 1989
- 15. Ruf, B., Ueber
die Lösungsstruktur von nichtlinearen elliptischen Gleichungen,
Habilitations-Schrift, 1987, Universitaet zu Koeln
- 14. Ruf, B., Multiplicity
results for nonlinear elliptic equations, "Nonlinear Analysis and
Function Spaces", Teubner Texte, 1986, Leipzig
- 13. Ruf, B., Srikanth,
P.N., Multiplicity results for superlinear elliptic problems with
partial interference with the spectrum, Math. Analysis and Appl., 1986
- 12. Ruf, B., Multiplicity
results for superlinear elliptic equations, in "Nonlinear
Analysis and its applications", NATO ASI series C, Vol. 173, 1986
- 11. Ruf, B., Srikanth, P.N., Multiplicity results for ODE's with
nonlinearities crossing all but a finite number of eigenvalues,
Nonlinear Analysis TMA, 1986
- 10. Ruf, B., Solimini,
S., On a class of superlinear Sturm-Liouville problem with arbitrarily
many solutions, SIAM J.Math. Analysis, 1986
- 9. Ruf, B., A
nonlinear Fredholm alternative for second order ordinary differential
equations, Math. Nachrichten, 1986
- 8. Berestycki, H., Lasry,
J.M., Mancini,G., Ruf, B., Periodic Hamiltonian trajectories on
starshaped manifolds, Proc. Symposia in Pure Mathematics, Vol. 44,
1985
- 7. Ruf, B., Remarks
and generalizations related to a recent multiplicity result of Lazer and McKenna, Nonlinear Analysis TMA, 1985
- 6. Berestycki, H., Lasry,
J.M., Mancini, G., Ruf, B., Existence of multiple periodic orbits on
starshaped Hamiltonian surfaces, Comm. Pure Appl. Math., 253-289, 1985
- 5. Berestycki,H., Lasry,J.M., Mancini,G.,
Ruf,B., Sur le nombre d'orbites periodiques des equations d'Hamilton
sur une surfaces d'energie etoilee, C.R. Acad.Sc., Paris, t. 296, ser.
I-13, 1983
- 4. Ruf, B., Nonlinear
eigenvalues and bifurcation, Boll. U.M.I., 18-A, 1981
- 3. Ruf, B., On a
nonlinear elliptic problem with jumping nonlinearities, Ann. Mat. Pura
ed Appl. IV, 1980
- 2. Ruf, B., Eine nichtlineare Fredholm Alternative, Dissertation, Zuerich, 1980
- 1. Hess,P., Ruf, B., On
a superlinear elliptic boundary value problem, Math. Z., 1978