```Date: Feb 11, 2013 3:08 AM
Author: William Elliot
Subject: Minimal Hausdorff Topology

On Mon, 11 Feb 2013, fom wrote:> I am wondering about diagram for> example 100, Minimal Hausdorff Topology.From what book?> The "special" basis neighborhoods in> the diagram do not seem to coincide> with the defining conditions.> > The second coordinate has j>n for that> n indexing the basis neighborhood,> but the diagram seems to indicate j<n. It does not.> Also, if I am correct about the error> in the diagram, then should not the> inequality be changed to j>=n so that> there is a basis neighborhood associated> with the first row of the diagram as> with every other row?> No, it makes no difference if it's j >= n or j > n.> I am probably just misreading the> definition.  But it has me confused.> It takes some study to understand.There are orders, that of A and that of Z+.The order for Z+ begins at the bottom with 1and goes to the top.  Notice how at the topthe rows of dots are closer that at the bottomindicating a two dimensional dot, dot, dot.for the rows.
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