Results 21 to 30 of about 10,990,525 (122)

Diametric theorems in sequence spaces [PDF]

open access: yes, 1992
Ahlswede R, Cai N, Zhang Z. Diametric theorems in sequence spaces. Combinatorica. 1992;12(1):1-17.We determine in almost all Manhattan lattices configurations, which for specified diameter have maximal cardinality.
Cai, Ning, Zhang, Zhen, Ahlswede, Rudolf
core   +1 more source

Amenability Constants for Unconditional Sums of Banach Algebras

open access: yesMathematische Nachrichten, Volume 299, Issue 9, Page 2472-2494, September 2026.
ABSTRACT We study Johnson amenability for unconditional direct sums of Banach algebras. Given a family (Ai)i∈I$(A_i)_{i\in I}$ of Banach algebras and a Banach sequence lattice E$E$ on I$I$, the E$E$‐sum ⨁i∈IAiE${\bigl (\bigoplus _{i\in I} A_i\bigr)}_{\!E}$ carries a natural Banach algebra structure via coordinatewise multiplication.
Tomasz Kania, Jerzy Ka̧kol
wiley   +1 more source

Diagonal multilinear operators on Köthe sequence spaces

open access: yes, 2017
We analyse the interplay between maximal/minimal/adjoint ideals of multilinear operators (between sequence spaces) and their associated Köthe sequence spaces.
Villafañe, Norberto Román   +3 more
core   +1 more source

From Heritage to Innovation: A Review of the Safety and Production of Aminopeptide Seasonings

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 5, September 2026.
ABSTRACT Aminopeptide seasonings, produced through proteolytic fermentation or enzymatic hydrolysis, represent a global family of ingredients with a high concentration of umami‐active free amino acids and umami‐ or kokumi‐active peptides derived from protein‐rich substrates.
José María Martín‐Miguélez   +4 more
wiley   +1 more source

The Effect of Task Demand on EEG Responses to Irrelevant Sound and Speech in Simulated Surgical Environments

open access: yesPsychophysiology, Volume 63, Issue 7, July 2026.
ABSTRACT Complex soundscapes in high‐stakes environments, such as the operating room (OR), are characterized by a variety of overlapping auditory stimuli and present significant challenges for personnel, particularly during periods of high demand.
Marc Rosenkranz   +3 more
wiley   +1 more source

On Vector-Valued Operator Riesz Sequence Spaces

open access: yes, 2019
In this paper we introduce vector-valued Riesz sequence spaces R₀^{q}(X), R_{c}^{q}(X), R_{∞}^{q}(X) and R₁^{q}(X) and determine their Köthe-Toeplitz duals.
Duyar, Osman, Demiriz, Serkan
core   +1 more source

Weak orthogonality and weak property ($\beta $) in some Banach sequence spaces

open access: yes, 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
core   +1 more source

Evidence of White Matter Neuroinflammation in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: A Diffusion‐Based Neuroinflammation Imaging Study

open access: yesHuman Brain Mapping, Volume 47, Issue 4, March 2026.
Diffusion‐based neuroinflammation imaging (NII) reveals widespread white matter abnormalities in ME/CFS patients, undetected by conventional DTI. NII metrics associate with mental health, disability and disease severity, providing novel evidence of neuroinflammation and highlighting NII's potential as a biomarker in ME/CFS.
Qiang Yu   +6 more
wiley   +1 more source

Neurocognitive Dynamics of Translating Information From a Spatial Map Into Action

open access: yesPsychophysiology, Volume 63, Issue 3, March 2026.
ABSTRACT How do we translate information from a spatial map to action in our immediate surroundings? Despite the widespread use of various tools for orientation, from paper maps to GPS, this fundamental question remains unanswered in our understanding of human spatial navigation.
Maud Saulay‐Carret   +3 more
wiley   +1 more source

A note on Köthe-Toeplitz duals of certain sequence spaces and their matrix transformations

open access: yes, 1995
In this paper we define the sequence spaces Sℓ∞(p), Sc(p) and Sc0(p) and determine the Köthe-Toeplitz duals of Sℓ∞(p). We also obtain necessary and sufficient conditions for a matrix A to map Sℓ∞(p) to ℓ∞ and investigate some related ...
S. K. Mishra, B. Choudhary
core   +1 more source

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