Volume 18, Issue 1 Albrecht Seelmann Relative residual bounds for eigenvalues in gaps of the essential spectrum 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 Albrecht Seelmann Find more articles with the same keywords relative distance between eigenvalues gap of the essential spectrum compression of a self-adjoint operator variational values maximal angle between closed subspaces Find more articles with the same subject classes 15A18 47A20 47A55 47B15 49Rxx