Results 21 to 30 of about 10,488,079 (121)
Bounded factorization property for ℓ-Köthe spaces
, 2023 Let ℓ denote a Banach sequence space with a monotone norm in which the canonical system (en )n is an unconditional basis. We show that the existence of an unbounded continuous linear operator T between ℓ-Köthe spaces λℓ (A) and λℓ (C) which factors ...
Taştüner, Emre +1 more
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Diagonal multilinear operators on Köthe sequence spaces
, 2019 We analyse the interplay between maximal/minimal/adjoint ideals of multilinear operators (between sequence spaces) and their associated Köthe sequence spaces.
Villafañe, Norberto Román +1 more
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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.
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On some geometric properties of certain Köthe sequence spaces [PDF]
, 1999 summary:It is proved that if a Kothe sequence space $X$ is monotone complete and has the weakly convergent sequence coefficient WCS$(X)>1$, then $X$ is order continuous.
Cui, Yunan, Hudzik, Henryk, Zhang, Tao
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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 +27 more
wiley +1 more source
Dual pairs of sequence spaces [PDF]
, 2001 The paper aims to develop for sequence spaces E a general concept for reconciling certain results, for example inclusion theorems, concerning generalizations of the Köthe-Toeplitz duals E×(×∈{α,β}) combined with dualities (E,G),G⊂E×, and the SAK-property
Johann Boos, Toivo Leiger
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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 +27 more
wiley +1 more source
Weak orthogonality and weak property ($\beta $) in some Banach sequence spaces
, 1999 summary:It is proved that a Köthe sequence space is weakly orthogonal if and only if it is order continuous. Criteria for weak property (${\mathbf \beta }$) in Orlicz sequence spaces in the case of the Luxemburg norm as well as the Orlicz norm are ...
Cui, Yunan +2 more
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Packing constant for Cesàro-Orlicz sequence spaces [PDF]
, 2016 summary:The packing constant is an important and interesting geometric parameter of Banach spaces. Inspired by the packing constant for Orlicz sequence spaces, the main purpose of this paper is calculating the Kottman constant and the packing constant of
Ma, Zhen-Hua +2 more
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The Environmental and Ecological Benefits of Edible Insects: A Review
Food Science &Nutrition, Volume 13, Issue 6, June 2025.Edible insects offer a sustainable and nutrient‐rich alternative to traditional protein sources, with significantly lower environmental impacts. This review highlights the nutritional composition of various insect species and explores their role in biodiversity, agricultural support, and food system sustainability, emphasizing their potential to ...
Belay Gezahegn Gebreyes, Tilahun A. Teka
wiley +1 more source