Previous talks this semester:
October 23rd, Michał Świętek (Ph. D. student UJ/WCMCS-IM PAN) 1115 room 105:
Exotic Banach spaces via Boolean algebras and Stone spaces
Abstract: One of the oldest questions in the theory of Banach spaces was
whether every Banach space is isomorphic to its hyperplanes.
This was answered negatively by Gowers and Mauray.
During my talk I will present a construction of a
classical C(K) space, based on the paper Piotr Koszmider, Banach spaces of continuous functions with few operators.
Math. Ann. 330 (2004), no. 1, 151–183, which also answers the above question negatively.
October 16th, Gabriel Salazar (IMPAN) 1115 room 105:
Some Applications of Shelah's Black Box
Abstract:Shelah’s Black Box is a combinatorial principle that allows us
to partially predict a given map under specific cardinal conditions.
Very roughly speaking, if you can get a result using Jensen’s Diamond
Principle then you can get a weak version of it in ZFC using the Black Box.
In this talk I will present some algebraic constructions realized by means of this principle,
focusing in the combinatorial aspect behind them.
Talks in the second semester of 2013-14.
Talks in the first semester of 2013-14.
Talks in the second semester of 2012-13.
Talks in the first semester of 2012-13.
Talks in the second semester of 2011-12.
Talks in the first semester of 2011-12.