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Grants





Topological and geometrical properties of Banach spaces and operator algebras (GAP201/12/0290)
from 01/01/2012
to 31/12/2016 investigator

Objectives:
We would like to study the structure of Banach spaces, spaces of continuous functions, C* algebras and their relationship. Main topics will include quantitative properties of Banach spaces, decompositions of Banach spaces to smaller subspaces, descriptive properties of the weak topology, James' boundaries of compact convex sets, Baire classes of strongly ane functions, noncommutative Choquet theory, weakly compact sets and spaces they generate, problems of BanachStone type for spaces of continuous functions, uniformly continuous functions and ane functions, various types of universal Banach spaces, existence of fixed points and approximate fixed points, noncommutative measure theory, structures on the set of all abelian subalgebras of a C* algebra and a Jordan algebra, representations of operator algebras using weights and completely positive maps, new types of orders on operators. We would like to pay special attention to mutual influence of particular structures and to subsequent connecting of dierent areas of functional analysis and clarifying their mutual relationships.



Topological and geometrical structures in Banach spaces (IAA100190901)
from 01/01/2009
to 31/12/2011 investigator

Stability of weak Asplund spaces and Gateaux differentiability spaces, Banach spaces with projectional skeleton, stability of Valdivia compacta, topological characterizations of some classes of Banach spaces, compact convex sets  duality of compact spaces and Banach spaces and topological classification, weak topology of weakly Kanalytic Banach spaces, geometric properties of boundaries of compact convex sets, strongly affine functions and Baire classes of Banach spaces, isomorphic properties of L_1preduals, descriptive properties of ranges of derivatives on Banach spaces, descriptive properties of norm and weak topologies on Banach spaces, binormality in Banach spaces, spaces of continuous functions, renormings and differentiability, weakstar uniformly KadecKlee norms, Lipschitz homeomorphisms, Markushevich bases, extensions of special Lipschitz mappings, retracts, absolutely minimal Lipschitz functions, Gurarij space, compacta with extra structure.



Topological structures in functional analysis (201/06/0018)
from 01/01/2006
to 31/12/2008 main investigator

Banach spaces and their generalizations (locally convex spaces) are one of the main tool in modern analysis. They serve as a framework for differential calculus and solving differential equations (including partial ones) and provide a great variety of questions concerning their structure. We plan to focus on topological, geometrical and algebraic structures of these spaces and interaction between these structures. The main areas include topological characterizations of important classes of Banach spaces, dual classes of compact spaces, spaces of continuous functions, properties of compact convex sets, differentiability of convex functions, relations between different weak topologies, special subsets of Banach spaces, descriptive properties of sets and operators. The nature of the project is a theoretical research in the above mentioned areas. The results will be published in scientific journals and presented at international conferences.
