Re: topology/chu+~ no^m

[VietHai.Nguyen@di.epfl.ch (Viet Hai NGUYEN)]

Dear Thien Quang Ha Le and others,

> formula for IN(A U B), IN(A \intersect B) is redundant? I mean, it's easy 
> to show that if X \in Y, then IN(X) \in IN(Y), 
This (X \in Y => IN(X) \in IN(Y)) is wrong.

> Anyway, this stuff has become too technical and i'm not sure whether other 
> forummers (except, probably the great engineer Blue Wolverine!) like to 
> read about this. So send me private email next time if you still want to 
> talk about this kind of abstract nonsense!
D'accord. 

CU,
VH