TY - JOUR AU - Gallardo Gutiérrez, Eva A. AU - González, María J. AU - Nicolau, Arthur PY - 2008 DO - 10.1090/S0002-9947-07-04310-3 SN - 0002-9947 UR - https://hdl.handle.net/20.500.14352/50599 T2 - Transactions of the American Mathematical Society AB - For any simply connected domain., we prove that a Littlewood type inequality is necessary for boundedness of composition operators on H-p(Omega), 1 <= p < infinity, whenever the symbols are finitely-valent. Moreover, the corresponding "little-oh"... LA - eng M2 - 395 PB - American Mathematical Society KW - composition operator KW - Lavrentiev domain KW - Nevanlinna counting function TI - Composition operators on hardy spaces on Lavrentiev domains TY - journal article VL - 360 ER -