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發表於 2005-2-20 21:19:28
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你講的topology係econ裡的定maths???
MATHS
A Topology C is about a set of all subsets of X..., in which 0 and X belongs to X...
for A,B in C,
and any intersection and union of A and B is in C too...
something like that la....now taking topology course.... |
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