Results 111 to 120 of about 13,595 (306)

Bilinear Form Test: Theoretical Properties and Applications

open access: yes
Tesis (Doctor en Estadísticas)--Pontificia Universidad Católica de Chile, 2025The present thesis investigates the Bilinear Form Test (BF Test) as a robust statistical tool for evaluating parameter constraints across various models. It examines the test's
Gárate Barraza, Ángelo Fabián
core   +1 more source

High Efficiency NIR Luminescence Beyond 900 nm Through Promoting Cr3+ Pair Generation in Sr3Zr2O7 Layered Perovskite

open access: yesLaser &Photonics Reviews, EarlyView.
A Cr3+/La3+ codoped Sr3Zr2O7 NIR phosphor showing luminescence at ∼960 nm with high IQE/EQE (92.4%/57.5%) and good thermal stability was developed. La3+ stabilizes Cr3+ and induces Cr3+ pairs, enabling efficient blue‐to‐NIR conversion for underwater wireless optical communication.
Zhiyuan Pan   +5 more
wiley   +1 more source

Bilinear Forms and (Hyper-) Determinants

open access: yesAdvances in Mathematics, 1996
It is the purpose of this paper to describe the homology of \(K_A\) (Koszul complex), in the case \(n=2\). The article is organized as follows. Section 2 contains some preliminaries together with the definition of the complexes \(B(a,b;A)\). Section 3 shows that over \(\mathbb{C}\), the bihomogeneous components of \(K_A\) are expressible in terms of ...
openaire   +3 more sources

Four‐Dimensional pp‐Wave Lie Groups and Harmonic Curvature

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT We determine all four‐dimensional Lie groups which have harmonic curvature. In parallel, a description of four‐dimensional pp‐wave Lie groups is obtained.
E. García‐Río   +2 more
wiley   +1 more source

The topological completion of a bilinear form

open access: yes, 2002
Let M=Mn,m be the Euclidean space Rp equipped with a symmetric bilinear form BM of rank p=n+m and signature n−m. We compactify M so that Mc is homogeneous and has as its group of isometries a Lie group whose dimension is the dimension of M plus 2p+1.
Jekel, Solomon   +3 more
core   +1 more source

Kuga–Satake Construction on Families of K3 Surfaces of Picard Rank 14

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT The isometry between the type IV6 and the type II4 hermitian symmetric domains suggests a possible relation between suitable moduli spaces of K3 surfaces of Picard rank 14 and of polarized abelian 8‐folds with totally definite quaternion multiplication. We show how this isometry induces a geometrically meaningful map between such moduli spaces
Flora Poon
wiley   +1 more source

On some nonlinear potential problems

open access: yesElectronic Journal of Differential Equations, 1999
The degree theory of mappings is applied to a two-dimensional semilinear elliptic problem with the Laplacian as principal part subject to a nonlinear boundary condition of Robin type. Under some growth conditions we obtain existence.
M. A. Efendiev   +2 more
doaj  

On the Discriminants of a Bilinear Form [PDF]

open access: yesCanadian Mathematical Bulletin, 1959
Wild Jonathan, Prince Albert, null Sask
openaire   +1 more source

Unveiling New Perspectives on the Hirota–Maccari System With Multiplicative White Noise

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this study, we delve into the stochastic Hirota–Maccari system, which is subjected to multiplicative noise according to the Itô sense. The stochastic Hirota–Maccari system is significant for its ability to accurately model how stochastic affects nonlinear wave propagation, providing valuable insights into complex systems like fluid dynamics
Mohamed E. M. Alngar   +3 more
wiley   +1 more source

LAM modelling of East European economies: Methodology, EU accession and privatisation

open access: yes, 2002
The paper presents a new approach to modelling economies in transition, where the adjustment processes are often nonlinear and data series are short. The model presented in the paper, the LAM-3 model, is the latest development in a series of long-run ...
Charemza, W, Parkhomenko, V, Makarova, S
core  

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