Up to my knowledge, this is the only book that constructs the Lebesgue integral for functions to a general Banach-space instead of the real numbers (thus saving us from the unnecessary and esthetically dissapointing construction through positive and negative functions). I don't know how Lang does it, but eerytime you'll pick up one of his books, you'll marvel at the beauty of mathematics !
Ссылка удалена правообладателем ---- The book removed at the request of the copyright holder.
