Volume 1, Issue 3 Illya M. Karabash M. M. Malamud Indefinite Sturm-Liouville operators (sgn x)(-d2/dx2+q(x)) with finite-zone potentials Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Illya M. Karabash M. M. Malamud Find more articles with the same keywords J-selfadjoint operator indefinite weight nonselfadjoint operator Sturm-Liouville operator Similarity characteristic functions algebraic and geometric multiplicities of an eigenvalue weighted norm inequalities Find more articles with the same subject classes 47E05 34B24 34B09 34L10 47B50