in 8 years after publication of the first version of this book，the rapidly progressing field of inverse problems witnessed changes and new developments parts of艾赛科威专著的《偏微分方程中的逆问题(第2版)》were used at several universities．and many colleagues and students as well asmyselfobserved several misprintsandimprecisions some ofthe research problems from the first edition have been solved this edition serves the purposes of reflecting these changes and making appropiate corrections 1 hope that these additions and corrections resulted in not too many new errors and misprints chapters i and 2 contain only 2-3 pages of new materiaijike in sections 1．5． 2 5 chapter 3 order equations and included bound……
