Volume 24, Issue 1 Włodzimierz Łenski Uaday Singh Bogdan Szal Trigonometric approximation of functions in seminormed spaces 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 Włodzimierz Łenski Uaday Singh Bogdan Szal Find more articles with the same keywords seminorm rate of approximation the Jensen inequality Fourier series matrix means Find more articles with the same subject classes 41A25 46E30 42A24 42A10 40C05