Geisinger, Leander A short proof of Weyl’s law for fractional differential operators. (English) Zbl 1317.35158 J. Math. Phys. 55, No. 1, 011504, 7 p. (2014). Reviewer: Chie-Ping Chu (Taipei) MSC: 35P20 35P15 35R11 PDFBibTeX XMLCite \textit{L. Geisinger}, J. Math. Phys. 55, No. 1, 011504, 7 p. (2014; Zbl 1317.35158) Full Text: DOI arXiv
Geisinger, Leander; Laptev, Ari; Weidl, Timo Geometrical versions of improved Berezin-Li-Yau inequalities. (English) Zbl 1257.35138 J. Spectr. Theory 1, No. 1, 87-109 (2011). MSC: 35P15 47A75 PDFBibTeX XMLCite \textit{L. Geisinger} et al., J. Spectr. Theory 1, No. 1, 87--109 (2011; Zbl 1257.35138) Full Text: DOI arXiv
Geisinger, Leander; Weidl, Timo Sharp spectral estimates in domains of infinite volume. (English) Zbl 1219.35156 Rev. Math. Phys. 23, No. 6, 615-641 (2011). MSC: 35P15 47A75 PDFBibTeX XMLCite \textit{L. Geisinger} and \textit{T. Weidl}, Rev. Math. Phys. 23, No. 6, 615--641 (2011; Zbl 1219.35156) Full Text: DOI arXiv