This is an announcement for the paper "Linearly ordered compacta
and Banach spaces with a projectional resolution of the identity"
by Wieslaw Kubis.
Abstract: We construct a compact linearly ordered space $K$ of
weight aleph one, such that the space $C(K)$ is not isomorphic to
a Banach space with a projectional resolution of the identity, while
on the other hand, $K$ is a continuous image of a Valdivia compact
and every separable subspace of $C(K)$ is contained in a 1-complemented
separable subspace. This answers two questions due to O. Kalenda
and V. Montesinos.
Archive classification: Functional Analysis; General Topology
Mathematics Subject Classification: Primary: 46B03, 46B26; Secondary:
54F05, 46E15, 54C35
Remarks: 13 pages
The source file(s), cmplmntn_property6.tex: 45742 bytes, is(are)
stored in gzipped form as 0602628.gz with size 14kb. The corresponding
postcript file has gzipped size 66kb.
Submitted from: wkubis(a)pu.kielce.pl
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0602628
or
http://arXiv.org/abs/math.FA/0602628
or by email in unzipped form by transmitting an empty message with
subject line
uget 0602628
or in gzipped form by using subject line
get 0602628
to: math(a)arXiv.org.
This is an announcement for the paper "Generalized cosine transforms
and classes of star bodies" by Boris Rubin.
Abstract: The spherical Radon transform on the unit sphere can be
regarded as a member of the analytic family of suitably normalized
generalized cosine transforms. We derive new formulas for these
transforms and apply them to study classes of intersections bodies
in convex geometry.
Archive classification: Functional Analysis; Differential Geometry
Mathematics Subject Classification: 44A12
The source file(s), an_red.tex: 66611 bytes, is(are) stored in
gzipped form as 0602540.gz with size 22kb. The corresponding postcript
file has gzipped size 100kb.
Submitted from: borisr(a)math.lsu.edu
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0602540
or
http://arXiv.org/abs/math.FA/0602540
or by email in unzipped form by transmitting an empty message with
subject line
uget 0602540
or in gzipped form by using subject line
get 0602540
to: math(a)arXiv.org.
This is an announcement for the paper "Optimal domain for the Hardy
operator" by Olvido Delgado and Javier Soria.
Abstract: We study the optimal domain for the Hardy operator
considered with values in a rearrangement invariant space. In
particular, this domain can be represented as the space of integrable
functions with respect to a vector measure defined on a $\delta$-ring.
A precise description is given for the case of the minimal Lorentz
spaces.
Archive classification: Functional Analysis; Classical Analysis and
ODEs
Mathematics Subject Classification: 46E30, 46B25
Remarks: 15 pages
The source file(s), DeSo.tex: 40756 bytes, is(are) stored in gzipped
form as 0602426.gz with size 13kb. The corresponding postcript file
has gzipped size 66kb.
Submitted from: soria(a)ub.edu
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0602426
or
http://arXiv.org/abs/math.FA/0602426
or by email in unzipped form by transmitting an empty message with
subject line
uget 0602426
or in gzipped form by using subject line
get 0602426
to: math(a)arXiv.org.
This is an announcement for the paper "A stochastic Datko-Pazy
theorem" by Bernhard Haak, Jan van Neerven and Mark Veraar.
Abstract: Let $H$ be a Hilbert space and $E$ a Banach space. In
this note we present a sufficient condition for an operator $R:
H\to E$ to be $\ga$--radonifying in terms of Riesz sequences in
$H$. This result is applied to recover a result of Lutz Weis and
the second named author on the $R$-boundedness of resolvents, which
is used to obtain a Datko-Pazy type theorem for the stochastic
Cauchy problem. We also present some perturbation results.
Archive classification: Functional Analysis
Mathematics Subject Classification: 47D06; 28C20; 46B09; 46B15;
47N30
Remarks: 10 pages
The source file(s), Haak-vanNeerven-Veraar-arxiv.tex: 33344 bytes,
is(are) stored in gzipped form as 0602427.gz with size 10kb. The
corresponding postcript file has gzipped size 60kb.
Submitted from: bernhard.haak(a)math.uni-karlsruhe.de
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0602427
or
http://arXiv.org/abs/math.FA/0602427
or by email in unzipped form by transmitting an empty message with
subject line
uget 0602427
or in gzipped form by using subject line
get 0602427
to: math(a)arXiv.org.
This is an announcement for the paper "A hereditarily indecomposable
asymptotic $\ell_2$ Banach space" by G. Androulakis and K. Beanland.
Abstract: A Hereditarily Indecomposable asymptotic $\ell_2$ Banach
space is constructed. The existence of such a space answers a
question of B. Maurey and verifies a conjecture of W.T. Gowers.
Archive classification: Functional Analysis
Mathematics Subject Classification: 46B20; 46B03
Remarks: 29 pages
The source file(s), HIHilbert.tex: 98830 bytes, is(are) stored in
gzipped form as 0601778.gz with size 25kb. The corresponding postcript
file has gzipped size 139kb.
Submitted from: kjbeanland(a)smcm.edu
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0601778
or
http://arXiv.org/abs/math.FA/0601778
or by email in unzipped form by transmitting an empty message with
subject line
uget 0601778
or in gzipped form by using subject line
get 0601778
to: math(a)arXiv.org.
This is an announcement for the paper "Maharam's problem" by Michel
Talagrand.
Abstract: We construct an exhaustive submeasure that is not equivalent
to a measure. This solves problems of J. von Neumann (1937) and
D. Maharam (1947).
Archive classification: Functional Analysis
Mathematics Subject Classification: 28A12
The source file(s), s1.TEX: 75873 bytes, is(are) stored in gzipped
form as 0601689.gz with size 23kb. The corresponding postcript file
has gzipped size 105kb.
Submitted from: spinglass(a)talagrand.net
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0601689
or
http://arXiv.org/abs/math.FA/0601689
or by email in unzipped form by transmitting an empty message with
subject line
uget 0601689
or in gzipped form by using subject line
get 0601689
to: math(a)arXiv.org.
This is an announcement for the paper "$H^{\infty}$ functional
calculus and square functions on noncommutative $L^p$-spaces" by
Marius Junge, Christian Le Merdy and Quanhua Xu.
Abstract: In this work we investigate semigroups of operators acting
on noncommutative $L^p$-spaces. We introduce noncommutative square
functions and their connection to sectoriality, variants of Rademacher
sectoriality, and $H^\infty$ functional calculus. We discuss several
examples of noncommutative diffusion semigroups. This includes
Schur multipliers, $q$-Ornstein-Uhlenbeck semigroups, and the
noncommutative Poisson semigroup on free groups.
Archive classification: Functional Analysis
Mathematics Subject Classification: Primary 47A60; Secondary 46L55,
46L69
Remarks: 118 pages
The source file(s), JLX.tex: 355560 bytes (looks big), is(are)
stored in gzipped form as 0601645.gz with size 94kb. The corresponding
postcript file has gzipped size 394kb.
Submitted from: qx(a)math.univ-fcomte.fr
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0601645
or
http://arXiv.org/abs/math.FA/0601645
or by email in unzipped form by transmitting an empty message with
subject line
uget 0601645
or in gzipped form by using subject line
get 0601645
to: math(a)arXiv.org.
This is an announcement for the paper "On extensions of Sobolev
functions defined on regular subsets of metric measure spaces"
by Pavel Shvartsman.
Abstract: We characterize the restrictions of first order Sobolev
functions to regular subsets of a homogeneous metric space and prove
the existence of the corresponding linear extension operator.
Archive classification: Functional Analysis
Mathematics Subject Classification: 46E35
The source file(s), SobolevExtension.tex: 96827 bytes, is(are)
stored in gzipped form as 0601679.gz with size 18kb. The corresponding
postcript file has gzipped size 80kb.
Submitted from: pshv(a)math.technion.ac.il
The paper may be downloaded from the archive by web browser from
URL
http://front.math.ucdavis.edu/math.FA/0601679
or
http://arXiv.org/abs/math.FA/0601679
or by email in unzipped form by transmitting an empty message with
subject line
uget 0601679
or in gzipped form by using subject line
get 0601679
to: math(a)arXiv.org.