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7. Consequences of the Hahn-Banach theorems - Aarhus Universitet

7. Consequences of the Hahn-Banach theorems - Aarhus Universitet

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Weak vector space topologies<br />

Pro<strong>of</strong>.<br />

Then S,T are X ′ -open and (x ′ ,y ′ ) ∈ S × T since li(x ′ ) ∈ Si and<br />

li(y ′ ) ∈ Ti,i = 1,2,... ,n.<br />

Klaus Thomsen <strong>7.</strong> <strong>Consequences</strong> <strong>of</strong> <strong>the</strong> <strong>Hahn</strong>-<strong>Banach</strong> <strong>the</strong>orems

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