Volume 11, Issue 1 Arundhathi Krishnan S. H. Kulkarni Pseudospectrum of an element of a Banach algebra 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 Arundhathi Krishnan S. H. Kulkarni Find more articles with the same keywords Banach algebra Hermitian idempotent numerical range pseudospectrum semisimple spectrum Find more articles with the same subject classes 47A10 46H05 47A12