Volume 24, Issue 2 Kais Feki Takeaki Yamazaki Joint numerical radius of spherical Aluthge transforms of tuples of Hilbert space operators 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 Kais Feki Takeaki Yamazaki Find more articles with the same keywords spherical Aluthge transform Duggal transform joint numerical radius joint spectral radius joint operator norm Find more articles with the same subject classes 47A13 47A12 47A30