00551nam a22001817a 4500 20260114161109.0 9780521866293 Davies, Brian E 8022 Linear operators and their spectra New York Cambridge university press 2007 xii+451 Cambridge studies in advanced mathematics Cambridge studies in advanced mathematics Vol. 106 Fourier transforms 8023 Perturbation theory Pseudospectrum 8024 ddc BK 755116 755116 0 0 ddc 0 0 GIF MAT MAT GEN 2026-01-08 Donated by Dr. Krishna Kumar G on the completion of SERB sponsored project (UO. No: Ad.F1/1373/2021 dated 22/01/2024) 7944.83 0 515.7246 DAV-L MATG262 2026-01-14 10:42:51 2026-01-14 BK