ANÁLISIS FUNCIONAL C*-ÁLGEBRAS Y TEORÍA DE OPERADORES FQM375

ANÁLISIS FUNCIONAL C*-ÁLGEBRAS Y TEORÍA DE OPERADORES FQM375

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  • Research lines:
  • Mathematical Subject Classification – MSC2010
    • 17 Nonassociative rings and algebras
    • 17C65 Jordan structures on Banach spaces and algebras
    • 41A50 Best approximation, Chebyshev systems
    • 41A52 Uniqueness of best approximation
    • 46 Functional analysis
    • 46B08 Ultraproduct techniques in Banach space theory
    • 46B20 Geometry and structure of normed linear spaces
    • 46E15 Banach spaces of continuous, differentiable or analytic functions
    • 46G20 Infinite-dimensional holomorphy
    • 46H Topological algebras, normed rings and algebras, Banach algebras
    • 46L Selfadjoint operator algebras (C*-algebras, von Neumann (W*-) algebras, etc.)
    • 46L57 Derivations, dissipations and positive semigroups in C∗-algebras
    • 47 Operator theory
    • 47B Special classes of linear operators
    • 47B33 Composition operators
    • 47B Special classes of linear operators
    • 47B48 Operators on Banach algebras
    • 47B49 Transformers, preservers (operators on spaces of operators)
    • 81 Quantum theory
    • 81Q12 Non-selfadjoint operator theory in quantum theory
  • The so-called Preservers Problems appear as a main topic of study in many different branches of Mathematics. These problems concern with the determination of those maps between Banach spaces, Banach algebras or other Analytic structures, preserving a property which is determined by the geometric structure of the underlying Banach space, or by a property which is given by the algebraic structure. There is a wide range of deep and current problems on maps preserving certain geometric or algebraic. The most significant goals in this project can be briefly resumed in the next items:
    • Extension of surjective isometries between the unit spheres of von Neumann algebras (i.e. Tingley’s problem for von Neumann algebras).
    • Tingley’s problem for C*-algebras, p-Schatten-von Neumann spaces, preduals of von Neumann algebras, non-commutative Lp- spaces, etc.
    • The Mazur-Ulam property for C(K) spaces.
    • The Mazur-Ulam property for finite dimensional C*-algebras, finite von Neumann algebras, trace class operators, von Neumann algebras, preduals of von Neumann algebras.
    • Tingley´s problem and Mazur-Ulam property for other operator algebras (Lipschitz algebras, uniform algebras, etc.) and spaces (Hardy spaces, holomorphic functions).
    • (Weak-)2-local isometries on uniform algebras.
    • (Weak-)2-local derivations on von Neumann algebras and C*-algebras.
    • Multiplicativity of (weak-)2-local *-homomorphisms on a C*-algebra.
    • (Weak-)2-local isometries on Lipschitz algebras.
    • (Weak-)2-local isometries on other operator algebras and on other operator spaces (like trace class operators, p-Schatten-von Neumann classes, non-commutative Lp spaces, etc.).
    • Automatic continuity of linear maps which are derivations, or triple derivations, or homomorphisms at zero or at the unit element, or at a unitary element.
    • Automatic continuity of generalized derivations.
    • Connections with those (continuous) linear maps preserving orthogonality (i.e., maps sending orthogonal elements to orthogonal elements).