Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: keyword exact "harmonic NA groups" Add to list Journal Article A1 open access Titchmarsh theorems on Damek-Ricci spaces via moduli of continuity of higher order Manoj Kumar, Vishvesh Kumar (UGent) and Michael Ruzhansky (UGent) (2025) INTERNATIONAL JOURNAL OF MATHEMATICS. 36(6). Add to list Journal Article A1 A note on K-functional, modulus of smoothness, Jackson theorem and Bernstein-Nikolskii-Stechkin inequality on Damek-Ricci spaces Vishvesh Kumar (UGent) and Michael Ruzhansky (UGent) (2021) JOURNAL OF APPROXIMATION THEORY. 264.