Data: sexta-feira, 04 de dezembro de 2015, às 10h
Sala: 241-A
Palestrante: Antonio Avilés, Universidad de Murcia
Título: The ball of the Hilbert space in its weak topology
Resumo: We will review several results and open problems about the topological properties of the ball of a nonseparable Hilbert space, endowed with its weak topology.
Tristan Bice: Cardinal Invariants in the Calkin Algebra
Data: sexta-feira, 27 de novembro de 2015, às 10h
Sala: 241-A
Palestrante: Tristan Bice, UFBA
Título: Cardinal Invariants in the Calkin Algebra
Resumo: While cardinal invariants on $\wp(\omega)/Fin$ have been thoroughly investigated, the theory of their various projection analogs in $B(H)/K(H)$ is far less developed. In particular, we take a look at analogs of the MAD family and tower number and their relationship to their classical counterparts in $\wp(\omega)/Fin$.
Sala: 241-A
Palestrante: Tristan Bice, UFBA
Título: Cardinal Invariants in the Calkin Algebra
Resumo: While cardinal invariants on $\wp(\omega)/Fin$ have been thoroughly investigated, the theory of their various projection analogs in $B(H)/K(H)$ is far less developed. In particular, we take a look at analogs of the MAD family and tower number and their relationship to their classical counterparts in $\wp(\omega)/Fin$.
Brice Mbombo: Bounded and non-unitarisable representations of the free group - part II
Data: sexta-feira, 23 de outubro de 2015, às 10h
Sala: 241-A
Palestrante: Brice Mbombo, IME-USP
Título: Bounded and non-unitarisable representations of the free group - part II
Resumo: Following T. PYTLIK and R. SZWARC, we will provide an explicit example of a family of uniformly bounded representations of free groups which are non-unitarisable.
Sala: 241-A
Palestrante: Brice Mbombo, IME-USP
Título: Bounded and non-unitarisable representations of the free group - part II
Resumo: Following T. PYTLIK and R. SZWARC, we will provide an explicit example of a family of uniformly bounded representations of free groups which are non-unitarisable.
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