The Department of Mathematics and Statistics at Lancaster University,
UK, will host two meetings with a common theme of Banach spaces on 25-26
May 2009.
The first, starting after lunch on Monday 25th May, is a meeting of the
North British Functional Analysis Seminar (NBFAS); the NBFAS speaker is
Stephen J. Dilworth (South Carolina, USA).
The second meeting, on Tuesday 26th May, is in honour of GrahamJameson
on the occasion of his retirement, celebrating his many significant
contributions to the department and the wider mathematical community
during his 35-year career in Lancaster. There will be six invited
one-hour talks given by the following speakers:
- Timothy Feeman (Villanova, USA),
- Richard Haydon (Oxford, UK),
- Rafal Latala (Warsaw, Poland),
- Edward W. Odell, (Texas, USA),
- Charles J. Read (Leeds, UK), and
- Thomas Schlumprecht (Texas A&M, USA).
This meeting is supported by a London Mathematical Society Scheme 1
conference grant. There is support available for UK graduate students;
the deadline for applications for such support is 1st May.
Full details of both meetings (including registration, schedule, travel
and accommodation) can be found at http://www.maths.lancs.ac.uk/jameson
For more information, please contact the organizer Niels J. Laustsen
(email: n.laustsen(a)lancaster.ac.uk).
This is an announcement for the paper "The universality of $\ell_1$
as a dual space" by Daniel Freeman, Edward Odell, and Thomas Schlumprecht.
Abstract: Let $X$ be a Banach space with a separable dual. We prove
that $X$ embeds isomorphically into a $\L_\infty$ space $Z$ whose dual
is isomorphic to $\ell_1$. If $X$ has a shrinking finite dimensional
decomposition and $X^*$ does not contain an isomorph of $\ell_1$,
then we construct such a $Z$, as above, not containing an isomorph of
$c_0$.If $X$ is separable and reflexive, we show that $Z$ can be made
to be somewhat reflexive.
Archive classification: math.FA
Mathematics Subject Classification: 46B20
Remarks: 33 pages
The source file(s), fos3.tex: 130106 bytes, is(are) stored in gzipped
form as 0904.0462.gz with size 37kb. The corresponding postcript file
has gzipped size 218kb.
Submitted from: schlump(a)math.tamu.edu
The paper may be downloaded from the archive by web browser from URL
http://front.math.ucdavis.edu/0904.0462
or
http://arXiv.org/abs/0904.0462
or by email in unzipped form by transmitting an empty message with
subject line
uget 0904.0462
or in gzipped form by using subject line
get 0904.0462
to: math(a)arXiv.org.
This is an announcement for the paper "Eigenfunctions for hyperbolic
rcmposition roerators---redux" by Joel H. Shapiro.
Abstract: The Invariant Subspace Problem (``ISP'') for Hilbert space
operators is known to be equivalent to a question that, on its surface,
seems surprisingly concrete: For composition operators induced on the
Hardy space H^2 by hyperbolic automorphisms of the unit disc, is every
nontrivial minimal invariant subspace one dimensional (i.e., spanned by
an eigenvector)? In the hope of reviving interest in the contribution
this remarkable result might offer to the studies of both composition
operators and the ISP, I revisit some known results, weaken their
hypotheses and simplify their proofs. Sample results: If f is a hyperbolic
disc automorphism with fixed points at a and b (both necessarily on the
unit circle), and C_f the composition operator it induces on H^2, then
for every function g in the subspace [{(z-a)(z-a)]^(1/2)H^2, the doubly
C_f-cyclic subspace generated by g contains many independent eigenvectors;
more precisely, the point spectrum of C_f's restriction to that subspace
intersects the unit circle in a set of positive measure. Moreover,
this restriction of C_f is hypercyclic (some forward orbit is dense).
Archive classification: math.FA math.CV
Mathematics Subject Classification: 47B33; 47A15
Remarks: 14 pages
The source file(s), shapiro_eigenfns_rvsd.tex: 50277 bytes, is(are)
stored in gzipped form as 0904.0022.gz with size 15kb. The corresponding
postcript file has gzipped size 98kb.
Submitted from: joels314(a)gmail.com
The paper may be downloaded from the archive by web browser from URL
http://front.math.ucdavis.edu/0904.0022
or
http://arXiv.org/abs/0904.0022
or by email in unzipped form by transmitting an empty message with
subject line
uget 0904.0022
or in gzipped form by using subject line
get 0904.0022
to: math(a)arXiv.org.