15 October 2014

16:00

15 October 2014

16:00

18 June 2014

16:00

Leobardo Fernandez Ramon

Abstract

<p><span> A continuum is a non-empty compact connected metric space. Given a continuum X let P(X) be the power set of X. We define the following set functions:</span><br /><span>T:P(X) to P(X) given by, for each A in P(X), T(A) = X \ { x in X : there is a continuum W such that x is in Int(W) and W does not intersect A}</span><br /><span>K:P(X) to P(X) given by, for each A in P(X), K(A) = Intersection{ W : W is a subcontinuum of X and A is in the interior of W}</span><br /><span>S:P(X) to P(X) given by, for each A in P(X), S(A) = { x in T(A) : A intersects T(x)}</span><br /><span>Some properties and relations between these functions are going to be presented.</span></p>

21 May 2014

16:00

14 May 2014

16:00

5 March 2014

16:00

26 February 2014

16:00

26 February 2014

16:00

26 February 2014

14:30

Mike Reed

Abstract

The main result is to give a separable, Cech-complete, 0-dimensional Moore space that is not Scott-domain representable. This result answered questions in the literature; it is known that each complete mertrisable space is Scott-domain representable. The talk will give a history of the techniques involved.

5 February 2014

16:00

20 November 2013

16:00