In this book, which may be used as a self-contained text for a beginning course, Professor Lefschetz aims to give the reader a concrete working knowledge of the central concepts of modern ...
Proofs of the Lefschetz theorem on hyperplane sections, the Picard–Lefschetz study of Lefschetz pencils, and Deligne theorems on the degeneration of the Leray spectral sequence and the global ...
在邱奇讲课结束前两分钟（课程在 Fine Hall 最大的教室进行），Lefschetz 就会开始从门缝里往里看。他瞪着我和黑板上一尘不染的文字，有时还会摇头 ...
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