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Jan 26, 2014 at 12:29 vote accept Tomasz Kania
Jan 25, 2014 at 16:52 answer added Bill Johnson timeline score: 6
Jan 21, 2014 at 20:14 history edited Tomasz Kania CC BY-SA 3.0
-1
Jan 21, 2014 at 14:37 comment added Bill Johnson @PhilipBrooker: Yes, that is why your interpretation is reasonable. :)
Jan 21, 2014 at 1:56 comment added Philip Brooker @BillJohnson: Good point. On the other hand, that would rule out the possibility of a separable counterexample (which is pondered in the final line of the question).
Jan 21, 2014 at 0:43 comment added Bill Johnson @PhilipBrooker: Your interpretation, which is reasonable, makes the question trivial. But probably Tomek means that every sequence in $T$ that converges weak$^*$ to an element of $X^*$ must converge weakly. Then the example $T$ must be weak$^*$ dense but weak$^*$ sequentially closed.
Jan 21, 2014 at 0:32 comment added Philip Brooker I think you just need to apply the Yosida-Hewitt decomposition to obtain a counterexample with $X=\ell_1$ and $T=c_0\subseteq\ell_\infty = \ell_1^\ast$.
Jan 20, 2014 at 11:02 history edited Tomasz Kania CC BY-SA 3.0
typo
Jan 20, 2014 at 10:42 history asked Tomasz Kania CC BY-SA 3.0