
Hardy–Littlewood–Sobolev and Stein–Weiss inequalities and integral systems on the Heisenberg group
Keywords: 42B37; 42B20; 45G15; 45M05; 45E10Weighted Hardy–Littlewood–Sobolev inequalities; Stein–Weiss inequalities; Fractional integrals; Heisenberg group; Regularity estimates; Integral systems; Asymptotic behavior