Volume 28, Issue 2 Jean Carlo Guella Positive definite matrix-valued kernels and their scalar valued projections: counterexamples 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 Jean Carlo Guella Find more articles with the same keywords matrix valued kernels strictly positive definite kernels scalar valued projections Find more articles with the same subject classes 42A82 43A35 47A56