Volume 9, Issue 3 Gorka Armentia Juan-Miguel Gracia Francisco E. Velasco Closest southeast submatrix that makes multiple a defective eigenvalue of the northwest one 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 Gorka Armentia Juan-Miguel Gracia Francisco E. Velasco Find more articles with the same keywords nearest matrix multiple eigenvalues controllable observable Moore-Penrose surjective mapping theorem nonsemisimple Find more articles with the same subject classes 15A18 15A60 15A09 93B10