Results 111 to 120 of about 1,189 (299)

Enhancing generalized spectral clustering with embedding Laplacian graph regularization

CAAI Transactions on Intelligence Technology, EarlyView.
Abstract An enhanced generalised spectral clustering framework that addresses the limitations of existing methods by incorporating the Laplacian graph and group effect into a regularisation term is presented. By doing so, the framework significantly enhances discrimination power and proves highly effective in handling noisy data.
Hengmin Zhang, Jian Yang, Bob Zhang, Yang Tang, Wenli Du, Bihan Wen   +5 more
wiley   +1 more source

Renormalization techniques for inflation systems and some of their applications

Acta Crystallographica Section A, EarlyView.
In this work, renormalization methods for quantities related to the diffraction of inflation systems are surveyed.Exact renormalization techniques are important and powerful, particularly for inflation‐generated systems. We review recent results in this direction.
Michael Baake, Franz Gähler, Anna Klick, Neil Mañibo, Jan Mazáč   +4 more
wiley   +1 more source

On (Co)homology of triangular Banach algebras [PDF]

Banach Center Publications, 2005
Suppose that A and B are unital Banach algebras with units 1_A and 1_B, respectively, M is a unital Banach A-B-bimodule, T=Tri(A,M,B) is the triangular Banach algebra, X is a unital T-bimodule, X_{AA}=1_AX1_A, X_{BB}=1_BX1_B, X_{AB}=1_AX1_B and X_{BA}=1_BX1_A.
openaire   +2 more sources

Special Vinberg cones of rank 4

Journal of High Energy Physics
E.B. Vinberg developed a theory of homogeneous convex cones $$C\subset V={\mathbb{R}}^{n}$$ , which has many applications. He gave a construction of such cones in terms of non-associative rank n matrix T-algebras $$\mathcal{T}$$ , that consist of vector ...
D. V. Alekseevsky, P. Osipov
doaj   +1 more source

Efficiency, Shadow Pricing and Regime Switching in Multi‐Ware Technologies: Evidence From Regulated Livestock Farms

Journal of Agricultural Economics, EarlyView.
ABSTRACT We develop a framework for regulated production systems where output generation and pollution abatement impose competing technological demands. Using a multi‐ware technology, we model the production set as the intersection of two input requirement frontiers, one for production and one for abatement, each reflecting distinct trade‐offs.
Youpei Yan, Robert G. Chambers
wiley   +1 more source

Edges as ecological filters: Asymmetrical orientation‐specific arthropod activity across forest boundaries

Insect Science, EarlyView.
Moderate retention forestry creates structurally sharp forest edges that act as ecological filters, shaping orientation‐specific activity of ground‐dwelling arthropods. Using drift‐fence pitfall traps, we show that activity aligned with ecotones is more frequent than activity across forest–clearcut boundaries, particularly among detritivores.
Dominik Stočes, Ondřej Košulič, Adrián Purkart, Jan Šipoš   +3 more
wiley   +1 more source

Characterizations of Lie derivations of triangular algebras

Linear Algebra and its Applications, 2011
A triangular algebra \(T=T(A,X,B)\) has the form of an upper triangular matrix ring with elements having diagonal entries in \(A\) and \(B\) and upper right entries in \(X\); \(A\) and \(B\) are unital algebras over a commutative ring \(R\) with 1, and \(X\) is an \(A\)-\(B\)-bimodule that is faithful on each side. The center of \(T\) is \(Z(T)=\{\text{
Ji, Peisheng, Qi, Weiqing
openaire   +2 more sources

Automorphisms of free braided nonassociative algebras of rank 2

Қарағанды университетінің хабаршысы. Математика сериясы
We prove the elementary reducibility of any nonaffine automorphism of a free nonassociative algebra of rank two over an arbitrary field. Using this result establish a property of automorphisms of this algebra that will be needed in later. We then derive
R. Mutalip, B.A. Duisengaliyeva, A.S. Naurazbekova   +2 more
doaj   +1 more source

Tilting modules over triangular matrix algebras(三角矩阵代数的倾斜模)

Zhejiang Daxue xuebao. Lixue ban, 2006
设是三角矩阵代数，关于倾斜A-模T1，倾斜B-模T2何时能扩充为倾斜R-模的问题已有讨论.本文考察了倾斜R-模在Cokernel函子下是否还是倾斜模的问题.得到了如下结论：如果(X，Y，f）是倾斜R-模，f是单射，则Cok(y)是倾斜B-模.从而给出了单点扩张代数的倾斜模的结构.
WANGShu-gui(王树桂)
doaj   +1 more source

Gradings on the algebra of triangular matrices as a Lie algebra: Revisited

Journal of Algebra
We investigate the group gradings on the algebra of upper triangular matrices over an arbitrary field, viewed as a Lie algebra. These results were obtained a few years early by the same authors. We provide streamlined proofs, and present a complete classification of isomorphism classes of the gradings.
Plamen Koshlukov, Felipe Yukihide Yasumura   +1 more
openaire   +3 more sources