Skriganov, M. M. The finiteness of the number of gaps in the spectrum of a many- dimensional polyharmonic operator with periodic potential. (Russian) Zbl 0464.35064 Mat. Sb., N. Ser. 113(155), 133-145 (1980). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 5 Documents MSC: 35P05 General topics in linear spectral theory for PDEs 31B05 Harmonic, subharmonic, superharmonic functions in higher dimensions 35J10 Schrödinger operator, Schrödinger equation 35J30 Higher-order elliptic equations Keywords:elliptic differential operator; polyharmonic operator; periodic potential; spectrum; zone; gap Citations:Zbl 0417.35063; Zbl 0435.35028 PDFBibTeX XMLCite \textit{M. M. Skriganov}, Mat. Sb., Nov. Ser. 113(155), 133--145 (1980; Zbl 0464.35064) Full Text: EuDML