Results 61 to 70 of about 328 (209)

On Azumaya Galois extensions and skew group rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
Two characterizations of an Azumaya Galois extension of a ring are given in terms of the Azumaya skew group ring of the Galois group over the extension and a Galois extension of a ring with a special Galois system is determined by the trace of the Galois
George Szeto
doaj   +1 more source

Efficient decomposition of separable algebras

open access: yesJournal of Symbolic Computation, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wayne Eberly, Mark Giesbrecht
openaire   +1 more source

Machine learning‐driven advances in carbon‐based quantum dots: Opportunities accompanied by challenges

open access: yesResponsive Materials, EarlyView.
Machine learning provides a unifying framework to connect structure, fluorescence properties, and applications of carbon‐based quantum dots. This review highlights how data‐driven strategies enable fluorescence regulation, reveal underlying mechanisms, and accelerate the rational design of functional carbon dots.
Liangfeng Chen   +8 more
wiley   +1 more source

Bridging Efficiency Gaps in Rice Production: A Primal System Analysis of Technical and Allocative Constraints in Bangladesh

open access: yesSustainable Development, EarlyView.
ABSTRACT Declining natural resources, rising production costs, and diminishing returns from input‐intensive practices threaten the sustainability of smallholder rice systems in Bangladesh. Using a primal system approach and survey data from 1869 rice‐producing households, this study evaluates technical and allocative inefficiency across major agro ...
Limon Deb   +3 more
wiley   +1 more source

Research on Ultra‐Wideband Pulse Current Method for DC Partial Discharge Measurement

open access: yesHigh Voltage, EarlyView.
ABSTRACT The conventional pulse current method is commonly used in AC or DC withstand voltage tests with partial discharge (PD) monitoring. Because of its relatively narrow measurement bandwidth, this method tends to ignore critical information in PD waveforms, making it difficult to eliminate pulse‐type interference under DC voltage conditions, where ...
Kaining Hou   +4 more
wiley   +1 more source

On characterizations of a center Galois extension

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Let B be a ring with 1,  C the center of B,  G a finite automorphism group of B, and BG the set of elements in B fixed under each element in G. Then, it is shown that B is a center Galois extension of BG (that is, C is a Galois algebra over CG with ...
George Szeto, Lianyong Xue
doaj   +1 more source

Non-Separable AF-Algebras [PDF]

open access: yes, 2006
We give two pathological phenomena for non-separable AF-algebras which do not occur for separable AF-algebras. One is that non-separable AF-algebras are not determined by their Bratteli diagrams, and the other is that there exists a non-separable AF-algebra which is prime but not primitive.
openaire   +2 more sources

The Feasibility of Household Food Waste Reduction in Finland: Insights From Five Consumer Profiles

open access: yesAustralian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT We apply a household production framework to analyse how changes in cooking skills, waste‐abatement costs and wage rates influence the food waste behaviour of five consumer profiles in Finland. We find that achieving a given reduction in food waste through skill‐enhancing interventions induces larger behavioural adjustments than equivalent ...
Aino Friman, Dušan Drabik
wiley   +1 more source

DERIVATIONS OF TENSOR PRODUCT OF SIMPLE C*-ALGEBRAS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2000
In this paper we study the properties of derivations of A B, where A and B are simple separable C*-algebras, and A B is the C*-completion of A B with respect to a C*-norm Yon A B and we will characterize the derivations of A B in terms of the ...
doaj  

On automorphisms of separable algebras [PDF]

open access: yesPacific Journal of Mathematics, 1967
Childs, L. N., DeMeyer, F. R.
openaire   +3 more sources

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