01346nam--2200421---450-99000031958020331620091111145410.00-521-44025-40031958USA010031958(ALEPH)000031958USA01003195820010108d1993----km-y0itay0103----baengGB||||||||001yyDuality and perturbation methods in critical point theoryNassif GhoussoubCambridgeUniversity Press1993XVIII, 258 p.ill.25 cmCambridge tracts in mathematics10700100227302001Cambridge tracts in mathematics107Topologia generaleDualità (matematica)Perturbazione (matematica)514.74GHOUSSOUB,Nassif53450ITsalbcISBD990000319580203316510 TM 10725224/CBS51000100184BKSCIPATTY9020010108USA01114720020403USA011640DIGIUSEPPE9020021125USA011637PATRY9020040406USA011622RSIAV69020091111USA011454Duality and Perturbation Methods in Critical Point Theory337370UNISA