Browsing NTNU Open by Author "Miheisi, Nazar"
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Projecting onto Helson matrices in Schatten classes
Brevig, Ole Fredrik; Miheisi, Nazar (Peer reviewed; Journal article, 2021)A Helson matrix is an infinite matrix A=(am,n)m,n≥1 such that the entry am,n depends only on the product mn. We demonstrate that the orthogonal projection from the Hilbert–Schmidt class S2 onto the subspace of Hilbert–Schmidt ...