06.08.2013 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Weak vector space topologies<br />

Let X be a real or complex vector space, and M a collection <strong>of</strong><br />

lineat functionals X → Φ.<br />

The sets <strong>of</strong> <strong>the</strong> form<br />

{y ∈ X : |l(y) − l(x)| < ǫ} (3)<br />

where x ∈ X,ǫ > 0 and l ∈ M vary, is a subbase for a topology on<br />

X,<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

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!