01227nam0-2200373li-450 99000016783020331620180312154610.00016783USA010016783(ALEPH)000016783USA0100167832001990071964-------y0itay0103----baengNEPositive solutions of operator equationsM.A. Krasnosel'skiitranslated from the Russian by Richard E. Flahertyedited by Leo F. BoronGroningenNoordhoff1964381 p.22 cmoperatori differenziali515724Teoria degli operatoriKrasnosel'skii,M.A.745850Boron,Leo F.Flaherty,Richard E.Sistema bibliotecario di Ateneo dell' Università di SalernoRICA990000167830203316515.724 KRA0005613/cbs515.72400222011BKSCI1990071820001110USA01171220020403USA011624PATRY9020040406USA011612RSIAV79020090529USA011634Positive solutions of operator equations1487912UNISA