“他关于摩斯码理论书是清晰阐述数学理论的典范，是我读过最好的书，”纽约州罗切斯特大学的道格拉斯·拉夫内尔说。

"His book on Morse theory is a model of mathematical clarity, the best book I have ever read," says Douglas Ravenel of the University of Rochester in New York state.

youdao

“他关于摩斯码理论书是清晰阐述数学理论的典范，是我读过最好的书，”纽约州罗切斯特大学的道格拉斯·拉夫内尔说。

"His book on Morse theory is a model of mathematical clarity, the best book I have ever read," says Douglas Ravenel of the University of Rochester in New York state.

youdao