异圈 quoted Trees by Jean-Pierre Serre
Is there an algebraic variety whose fundamental group is isomorphic to group G?
— Trees by Jean-Pierre Serre (Page 19)
我震撼得手抖十分钟,什么,为什么又关algebraic variety的事?!
Is there an algebraic variety whose fundamental group is isomorphic to group G?
— Trees by Jean-Pierre Serre (Page 19)
我震撼得手抖十分钟,什么,为什么又关algebraic variety的事?!