Results 31 to 40 of about 10,990,525 (122)

The domination theorem for operator classes generated by Orlicz spaces

Mathematische Nachrichten, Volume 298, Issue 11, Page 3576-3598, November 2025.
Abstract We study lattice summing operators between Banach spaces focusing on two classes, ℓφ$\ell _\varphi$‐summing and strongly φ$\varphi$‐summing operators, which are generated by Orlicz sequence lattices ℓφ$\ell _\varphi$. For the class of strongly φ$\varphi$‐summing operators, we prove the domination theorem, which complements Pietsch's ...
D. L. Fernandez, M. Mastyło, J. Santos, E. B. Silva   +3 more
wiley   +1 more source

A structure theorem for echelon Köthe spaces

, 1989
In [9], Lopez-Molina defined the echelon Köthe spaces $Λp(\Chi,,\mu,gk)$, which provide a suitable generalization of the echelon sequence spaces $λp(a_{n}k)$ to a general measure space $\Chi, , \mu$ (see also [5]).
Díaz, J.C.
core   +1 more source

Genetic variation among progeny shapes symbiosis in a basidiomycete with poplar

New Phytologist, Volume 248, Issue 1, Page 157-177, October 2025.
Summary Forest trees rely on ectomycorrhizal (ECM) fungi for acquiring scarce resources such as water and nutrients. However, the molecular mechanisms governing ECM traits remain inadequately understood, particularly the role of intraspecific fungal variation in root‐tip colonisation and trophic interactions.
Benjamin Dauphin, Maíra de Freitas Pereira, Daniel Croll, Thalita Cardoso Anastácio, Laure Fauchery, Frédéric Guinet, Maurício Dutra Costa, Francis Martin, Martina Peter, Annegret Kohler   +9 more
wiley   +1 more source

The Modulus of Nearly Uniform Smoothness in Orlicz Sequence Spaces

, 2019
It is well known that the modulus of nearly uniform smoothness related with the fixed point property is important in Banach spaces. In this paper, we prove that the modulus of nearly uniform smoothness in Köthe sequence spaces without absolutely ...
Yujia Zhan, Shaoyong Zhang, Meiling Zhang   +2 more
core   +1 more source

Properties of multipliers on Köthe sequence spaces

, 2021
El presente trabajo tiene como objetivo estudiar el operador multiplicación definido sobre los espacios de sucesiones de Köthe, el cual contiene espacios clásicos como lo son el espacio $c_0$, el espacio $l^{\infty}$, los espacios $l^{p}$ para $1 \leq
Rivera Sarmiento, María Alejandra
core   +1 more source

Can Metagenomic Analyses Be Used Effectively in Safe Food Production?

Food Science &Nutrition, Volume 13, Issue 8, August 2025.
This graphical abstract illustrates the metagenomic workflow applied in food safety. It outlines the process from microbial detection in food matrices to genome‐level identification via next‐generation sequencing (NGS). The visualization emphasizes the integration of modern sequencing technologies to assess foodborne pathogens and microbial communities
Berrak Delikanli‐Kiyak, Ilkay Yilmaz, Metın Guldas   +2 more
wiley   +1 more source

EntoSieve: Automated Size‐Sorting of Insect Bulk Samples to Aid Accurate Megabarcoding and Metabarcoding

Molecular Ecology Resources, Volume 25, Issue 6, August 2025.
ABSTRACT Widespread insect decline necessitates the development and use of standardized protocols for regular monitoring. These methods have to be rapid, efficient and cost‐effective to allow for large‐scale implementation. Many insect sampling and molecular methods have been developed.
Aleida Ascenzi, Lorenz Wührl, Vivian Feng, Nathalie Klug, Christian Pylatiuk, Pierfilippo Cerretti, Rudolf Meier   +6 more
wiley   +1 more source

Effects of land cover and protected areas on flying insect diversity

Conservation Biology, Volume 39, Issue 4, August 2025.
Abstract Widespread insect losses are a critical global problem. Mitigating this problem requires identifying the principal drivers across different taxa and determining which insects are covered by protected areas. However, doing so is hindered by missing information on most species owing to extremely high insect diversity and difficulties in ...
James S. Sinclair, Dominik Buchner, Mark O. Gessner, Jörg Müller, Steffen U. Pauls, Stefan Stoll, Ellen A. R. Welti, Claus Bässler, Jörn Buse, Frank Dziock, Julian Enss, Thomas Hörren, Robert Künast, Yuanheng Li, Andreas Marten, Carsten Morkel, Ronny Richter, Sebastian Seibold, Martin Sorg, Sönke Twietmeyer, Dirk Weis, Wolfgang Weisser, Benedikt Wiggering, Martin Wilmking, Gerhard Zotz, Mark Frenzel, Florian Leese, Peter Haase   +27 more
wiley   +1 more source

Best Constants between Equivalent Norms in Lorentz Sequence Spaces [PDF]

, 2012
We find the best constants in inequalities relating the standard norm, the dual norm, and the norm ∥x∥(p,s):=inf⁡{∑k∥x(k)∥p,s}, where the infimum is taken over all finite representations x=∑kx(k) in the classical Lorentz sequence spaces.
A. N. Marcoci, Persson, L.-E., Marcoci, A.N.,, Persson, L.-E.,, Barza, Sorina,, Marcoci, A.N., S. Barza, L. E. Persson, Barza, S.,, Barza, Sorina, Persson, Lars-Erik,   +10 more
core   +1 more source

Scientists' warning on the need for greater inclusion of dragonflies in global conservation

Insect Conservation and Diversity, Volume 18, Issue 4, Page 465-484, July 2025.
Stressors to dragonflies are multiple, and in many cases interactive. Specialist species are at risk, while generalists can benefit from some human activities. Dragonflies are sentinels for conservation, being promising surrogates for other taxa while also being appealing to citizen science initiatives.
Michael J. Samways, Alex Córdoba‐Aguilar, Charl Deacon, Fernanda Alves‐Martins, Ian R. C. Baird, S. Henrik Barmentlo, Leandro Schlemmer Brasil, Jason T. Bried, Viola Clausnitzer, Adolfo Cordero‐Rivera, Felipe H. Datto‐Liberato, Geert De Knijf, Aleš Dolný, Ryo Futahashi, Rhainer Guillermo‐Ferreira, Christopher Hassall, Leandro Juen, Rassim Khelifa, Federico Lozano, Javier Muzón, Göran Sahlén, Melissa Sánchez Herrera, John P. Simaika, Robby Stoks, Catalina M. Suárez‐Tovar, Frank Suhling, Yoshitaka Tsubaki, Marina Vilenica   +27 more
wiley   +1 more source