Volume 2, Issue 2 Rubén A. Martínez-Avendaño Higher-rank numerical range in infinite-dimensional Hilbert space 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 Rubén A. Martínez-Avendaño Find more articles with the same keywords Higher-rank numerical range selfadjoint operator nonunitary isometry Find more articles with the same subject classes 47A12 47B15 15A60