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Nov 25, 2014 at 19:36 comment added Henrique de Oliveira @Dirk You're right, I missed that at first.
Nov 25, 2014 at 8:24 comment added Dirk Actually, your statement is not strictly stronger than the result the OP is asking for since he wants the sets $S_t$ to be nested.
Nov 24, 2014 at 23:03 history edited Henrique de Oliveira CC BY-SA 3.0
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S Nov 24, 2014 at 22:56 history answered Henrique de Oliveira CC BY-SA 3.0
S Nov 24, 2014 at 22:56 history made wiki Post Made Community Wiki by Henrique de Oliveira