156 research outputs found
GÎŽ-Embeddings in Hilbert space, II
AbstractIn this paperâwhich is a continuation of [10]âwe exhibit some topological conditions on a Banach space which ensure that it contains isometric copies of infinite-dimensional conjugate spaces. This result is used to identify a large class of Banach spaces that are hereditarily separable duals. A method of defining a âJamestree sumâ of a countable number of Banach spaces is given. It is used to construct various counterexamples; for instance, there exists for each integer n a Banach space that can be mapped into Hilbert space via the composition of n but not (n â 1) GÎŽ-embeddings. We also continue the investigation of the global structure of some geometrically defined Banach spaces. For example, it is shown that a separable Banach space X with the Radon-Nikodym property (R.N.P.) has a subspace y with a boundedly complete finite-dimensional decomposition (F.D.D.) such that XY has an F.D.D. and the R.N.P
Determinant Representations of Correlation Functions for the Supersymmetric t-J Model
Working in the -basis provided by the factorizing -matrix, the scalar
products of Bethe states for the supersymmetric t-J model are represented by
determinants. By means of these results, we obtain determinant representations
of correlation functions for the model.Comment: Latex File, 41 pages, no figure; V2: minor typos corrected, V3: This
version will appear in Commun. Math. Phy
Partial Wave Analysis of
BES data on are presented. The
contribution peaks strongly near threshold. It is fitted with a
broad resonance with mass MeV, width MeV. A broad resonance peaking at 2020 MeV is also required
with width MeV. There is further evidence for a component
peaking at 2.55 GeV. The non- contribution is close to phase
space; it peaks at 2.6 GeV and is very different from .Comment: 15 pages, 6 figures, 1 table, Submitted to PL
Avanços na elucidação dos mecanismos de ação de Cimicifuga racemosa (L.) Nutt. nos sintomas do climatério
Growth and physiology of one-year old poplar (**Populus**) under elevated atmospheric <tex>CO_{2}$</tex> levels
A computerized numerical experiment study on averaging solar radiation penetration in plant stands
A computerized numerical experimental study of average solar radiation penetration in plant stands
Effects of elevated atmospheric <tex>CO_{2}$</tex> on growth, biomass production and nitrogen allocation of two **Populus** clones
Physiology, growth and development of young poplar plants under elevated atmospheric <tex>CO_{2}$</tex> levels
- âŠ