秦老2008年駕鶴西去。當年老教授雖在中科院數學所，但也是清華兼職教授，主持討論班。

來源: wanttosaysomething 於 2021-06-08 12:41:41 [舊帖] [給我悄悄話] 本文已被閱讀：次

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