Ackermann, Nils; Weth, Tobias Unstable normalized standing waves for the space periodic NLS. (English) Zbl 1405.35191 Anal. PDE 12, No. 5, 1177-1213 (2019). MSC: 35Q55 35J91 35J20 PDF BibTeX XML Cite \textit{N. Ackermann} and \textit{T. Weth}, Anal. PDE 12, No. 5, 1177--1213 (2019; Zbl 1405.35191) Full Text: DOI arXiv OpenURL
Ackermann, Nils; Cano, Alfredo; Hernández-Martínez, Eric Spectral density estimates with partial symmetries and an application to Bahri-Lions-type results. (English) Zbl 1372.35078 Calc. Var. Partial Differ. Equ. 56, No. 1, Paper No. 6, 19 p. (2017). Reviewer: Vladimir Mityushev (Kraków) MSC: 35J05 35J61 PDF BibTeX XML Cite \textit{N. Ackermann} et al., Calc. Var. Partial Differ. Equ. 56, No. 1, Paper No. 6, 19 p. (2017; Zbl 1372.35078) Full Text: DOI OpenURL
Ackermann, Nils; Chagoya, Julián Ground states for irregular and indefinite superlinear Schrödinger equations. (English) Zbl 1347.35114 J. Differ. Equations 261, No. 9, 5180-5201 (2016). MSC: 35J61 35J20 PDF BibTeX XML Cite \textit{N. Ackermann} and \textit{J. Chagoya}, J. Differ. Equations 261, No. 9, 5180--5201 (2016; Zbl 1347.35114) Full Text: DOI OpenURL
Ackermann, Nils; Dancer, Norman Precise exponential decay for solutions of semilinear elliptic equations and its effect on the structure of the solution set for a real analytic nonlinearity. (English) Zbl 1389.35071 Differ. Integral Equ. 29, No. 7-8, 757-774 (2016). Reviewer: Florin Catrina (New York) MSC: 35B40 35J91 35J20 PDF BibTeX XML Cite \textit{N. Ackermann} and \textit{N. Dancer}, Differ. Integral Equ. 29, No. 7--8, 757--774 (2016; Zbl 1389.35071) Full Text: arXiv OpenURL
Ackermann, Nils; Clapp, Mónica; Pistoia, Angela Boundary clustered layers near the higher critical exponents. (English) Zbl 1288.35240 J. Differ. Equations 254, No. 10, 4168-4193 (2013). Reviewer: Yaping Liu (Pittsburg) MSC: 35J60 35J20 35B33 35B09 PDF BibTeX XML Cite \textit{N. Ackermann} et al., J. Differ. Equations 254, No. 10, 4168--4193 (2013; Zbl 1288.35240) Full Text: DOI arXiv OpenURL
Ackermann, Nils; Clapp, Mónica; Pacella, Filomena Alternating sign multibump solutions of nonlinear elliptic equations in expanding tubular domains. (English) Zbl 1273.35132 Commun. Partial Differ. Equations 38, No. 4-6, 751-779 (2013). MSC: 35J61 35B40 PDF BibTeX XML Cite \textit{N. Ackermann} et al., Commun. Partial Differ. Equations 38, No. 4--6, 751--779 (2013; Zbl 1273.35132) Full Text: DOI arXiv OpenURL
Ackermann, Nils; Szulkin, Andrzej A concentration phenomenon for semilinear elliptic equations. (English) Zbl 1266.35074 Arch. Ration. Mech. Anal. 207, No. 3, 1075-1089 (2013). Reviewer: Dian K. Palagachev (Bari) MSC: 35J61 35B40 PDF BibTeX XML Cite \textit{N. Ackermann} and \textit{A. Szulkin}, Arch. Ration. Mech. Anal. 207, No. 3, 1075--1089 (2013; Zbl 1266.35074) Full Text: DOI arXiv OpenURL
Ackermann, Nils; Clapp, Mónica; Pacella, Filomena Self-focusing multibump standing waves in expanding waveguides. (English) Zbl 1229.35285 Milan J. Math. 79, No. 1, 221-232 (2011). MSC: 35Q60 78A50 78A60 PDF BibTeX XML Cite \textit{N. Ackermann} et al., Milan J. Math. 79, No. 1, 221--232 (2011; Zbl 1229.35285) Full Text: DOI OpenURL
Ackermann, Nils; Bartsch, Thomas; Kaplický, Petr; Quittner, Pavol A priori bounds, nodal equilibria and connecting orbits in indefinite superlinear parabolic problems. (English) Zbl 1143.37049 Trans. Am. Math. Soc. 360, No. 7, 3493-3539 (2008). Reviewer: Boris V. Loginov (Ul’yanovsk) MSC: 37L05 35K20 35K55 37L10 47H20 PDF BibTeX XML Cite \textit{N. Ackermann} et al., Trans. Am. Math. Soc. 360, No. 7, 3493--3539 (2008; Zbl 1143.37049) Full Text: DOI OpenURL
Ackermann, Nils; Bartsch, Thomas; Kaplický, Petr An invariant set generated by the domain topology for parabolic semiflows with small diffusion. (English) Zbl 1139.35053 Discrete Contin. Dyn. Syst. 18, No. 4, 613-626 (2007). Reviewer: Christian Pötzsche (München) MSC: 35K55 35K20 35B25 37B30 55M30 PDF BibTeX XML Cite \textit{N. Ackermann} et al., Discrete Contin. Dyn. Syst. 18, No. 4, 613--626 (2007; Zbl 1139.35053) Full Text: DOI OpenURL
Ackermann, Nils; Bartsch, Thomas Superstable manifolds of semilinear parabolic problems. (English) Zbl 1129.35428 J. Dyn. Differ. Equations 17, No. 1, 115-173 (2005). MSC: 35K20 37L05 35K55 37L10 47H20 PDF BibTeX XML Cite \textit{N. Ackermann} and \textit{T. Bartsch}, J. Dyn. Differ. Equations 17, No. 1, 115--173 (2005; Zbl 1129.35428) Full Text: DOI OpenURL
Ackermann, Nils; Weth, Tobias Multibump solutions of nonlinear periodic Schrödinger equations in a degenerate setting. (English) Zbl 1070.35083 Commun. Contemp. Math. 7, No. 3, 269-298 (2005). MSC: 35Q55 35J60 47H07 PDF BibTeX XML Cite \textit{N. Ackermann} and \textit{T. Weth}, Commun. Contemp. Math. 7, No. 3, 269--298 (2005; Zbl 1070.35083) Full Text: DOI OpenURL