ppip: 流浪的天空

在Princeton大学曾经流传着一些数学家证明定理的“显然”标准
if Wedderburn says it’s obvious,everybody in the room has seen it ten minutes ago
if Bohnenblust says it’s obvious,it’s obvious
if Bochner says it’s obvious,you can figure it out in half an hour
if von Neumann says it’s obvious,you can prove it in three months if you are a genius
if Lefschetz says it’s obvious,it’s wrong
Lefschetz不屑于证明细节在数学界是众所周知的，甚至他的课堂上有很多小错误，据说有一次Hodge说Lefschetz证明了一个Hodge原来已经证明过的定理，不过定理本身是错的…
－－－－－　我是分割线　－－－－－
　　some tales of mathematic [...]