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008 970609s1965    us            ||| | eng  
035   $ab10818492-39ule_inst
035   $aLE01309009$9ExL
040   $aDip.to Matematica$beng
082 0 $a515.724
084   $aAMS 46C
084   $aAMS 47A55
084   $aAMS 47B37
100 1 $aFriedrichs, Kurt Otto$040614
245 10$aPerturbation of spectra in Hilbert space /$cKurt O. Friedrichs
260   $aProvidence, R. I. :$bAmerican Mathematical Society,$c1965
300   $axiii, 178 p. ;$c22 cm.
490 0 $aLectures in applied mathematics, ISSN 00758485 ;$v3
650  4$aInner product spaces
650  4$aOperators on special spaces
650  4$aPerturbation theory
907   $a.b10818492$b23-02-17$c28-06-02
912   $a991001228209707536
945   $aLE013 47A FRI11 (1965)$g1$i2013000085784$lle013$o-$pE0.00$q-$rl$s-  $t0$u2$v0$w2$x0$y.i10925272$z28-06-02
996   $aPerturbation of spectra in Hilbert space$981599
997   $aUNISALENTO
998   $ale013$b01-01-97$cm$da  $e-$feng$gus $h0$i1