00512nam a2200133Ia 4500 250307b |||||||| |||| 00| 0 eng d 515.72 K19.SI Kato, Tosio 5943 A short introduction to perturbation theory for linear operators / New York: Springer-Verlag, 1982 xiii, 161p. Index, Bibl. "Slightly expanded version of chapters 1 & 2 of Tosio Kato 'Perturbation theory for linear operators, 2nd ed.'" ddc BK 0 0 0 515_720000000000000_K19_SI 0 15392 ISI ISI 1998-09-21 8 13 515.72 K19.SI DP18415 2026-06-18 00:00:00 2026-04-17 BK 12676 12676