Mandel, Rainer; Scheider, Dominic; Yeşil, Tolga Dual variational methods for a nonlinear Helmholtz equation with sign-changing nonlinearity. (English) Zbl 1473.35125 Calc. Var. Partial Differ. Equ. 60, No. 4, Paper No. 133, 13 p. (2021). MSC: 35J05 35Q60 35A01 35J20 PDFBibTeX XMLCite \textit{R. Mandel} et al., Calc. Var. Partial Differ. Equ. 60, No. 4, Paper No. 133, 13 p. (2021; Zbl 1473.35125) Full Text: DOI arXiv
Mandel, Rainer; Scheider, Dominic Variational methods for breather solutions of nonlinear wave equations. (English) Zbl 1481.35014 Nonlinearity 34, No. 6, 3618-3640 (2021). MSC: 35A15 35B10 35L20 35L71 PDFBibTeX XMLCite \textit{R. Mandel} and \textit{D. Scheider}, Nonlinearity 34, No. 6, 3618--3640 (2021; Zbl 1481.35014) Full Text: DOI arXiv
Mandel, Rainer; Scheider, Dominic An annulus multiplier and applications to the limiting absorption principle for Helmholtz equations with a step potential. (English) Zbl 1473.35124 Math. Ann. 379, No. 1-2, 865-907 (2021). Reviewer: James Bernard Kennedy (Lisboa) MSC: 35J05 35A22 35J60 PDFBibTeX XMLCite \textit{R. Mandel} and \textit{D. Scheider}, Math. Ann. 379, No. 1--2, 865--907 (2021; Zbl 1473.35124) Full Text: DOI arXiv Link
Scheider, Dominic Breather solutions of the cubic Klein-Gordon equation. (English) Zbl 1452.35107 Nonlinearity 33, No. 12, 7140-7166 (2020). MSC: 35L71 35L15 35B32 35B10 35J05 PDFBibTeX XMLCite \textit{D. Scheider}, Nonlinearity 33, No. 12, 7140--7166 (2020; Zbl 1452.35107) Full Text: DOI arXiv