01270nam0-2200397li-450 99000024386020331620180312154749.0981-02-3064-80024386USA010024386(ALEPH)000024386USA0100243862001998031997-------y0itay0103----baengSGApproximate solutions of operator equationsMingjun Chen, Zhongying Chen, Guanrong ChenSingaporeWorld Scientificscopyr. 1997XIII, 343 p.ill.23 cmteoria degli operatoriteoria dell'approssimazione515724Teoria degli operatoriChen,Mingjun442110Chen,GuanrongChen,ZhongyingSistema bibliotecario di Ateneo dell' Università di SalernoRICA990000243860203316515.724 CHE0021293/CBS515.72400221992BKSCI1998032120001110USA01171520020403USA011632PATRY9020040406USA011617RSIAV79020090529USA011620Approximate solutions of operator equations1502323UNISA