Results 51 to 60 of about 5,091 (242)
On collineation groups of translation planes of order q4
International Journal of Mathematics and Mathematical Sciences, 1986 Let P be an affine translation plane of order q4 admitting a nonsolvable group G in its translation complement. If G fixes more than q+1 slopes, the structure of G is determined.
V. Jha, N. L. Johnson
doaj +1 more source
2‐Conformal Vector Fields on the Model Sol Space and Hyperbolic Ricci Solitons
Journal of Mathematics, Volume 2025, Issue 1, 2025.In this study, we present the notion of 2‐conformal vector fields on Riemannian and semi‐Riemannian manifolds, which are an extension of Killing and conformal vector fields. Next, we provide suitable vector fields in Sol space that are 2‐conformal. A few implications of 2‐conformal vector fields in hyperbolic Ricci solitons are investigated.
Rawan Bossly +3 more
wiley +1 more source
A Theoretical Investigation of Channel Wave Multipath Propagation in a Coal Seam
Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019 This study investigates the mechanism of channel wave multipath propagation to determine features of a channel wave in a coal seam. For this purpose, deduction formulas were used for different time delays and propagation paths and, subsequently, a multipath fading channel wave pattern was built. MATLAB software was used to simulate the model.
Yinjing Guo +4 more
wiley +1 more source
Riemann solitons on Egorov and Cahen-Wallach symmetric spaces
AIMS MathematicsIn this paper, we consider Egorov and Cahen-Wallach symmetric spaces and study the Riemann solitons on these spaces. We prove that Egorov and Cahen-Wallach symmetric spaces admit the Riemann solitons.
Shahroud Azami +2 more
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A Co-Point Mapping-Based Approach to Drivable Area Detection for Self-Driving Cars
Engineering, 2018 The randomness and complexity of urban traffic scenes make it a difficult task for self-driving cars to detect drivable areas. Inspired by human driving behaviors, we propose a novel method of drivable area detection for self-driving cars based on fusing
Ziyi Liu, Siyu Yu, Nanning Zheng
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Irrigation and Drainage, Volume 73, Issue 3, Page 988-1009, July 2024.Abstract In this study, the performance of a one‐source surface energy balance (OSEB) remote sensing (RS) of actual crop evapotranspiration (ETa), incorporating data from different spaceborne, airborne and proximal multispectral data, was evaluated. The RS platforms in this study included Landsat‐8 (30 m pixel size), Sentinel‐2 (10 m), Planet CubeSat ...
Edson Costa‐Filho +2 more
wiley +1 more source
Homotheties of a Class of Spherically Symmetric Space‐Time Admitting G3 as Maximal Isometry Group
Advances in Mathematical Physics, Volume 2018, Issue 1, 2018., 2018 The homotheties of spherically symmetric space‐time admitting G4, G6, and G10 as maximal isometry groups are already known, whereas, for the space‐time admitting G3 as isometry groups, the solution in the form of differential constraints on metric coefficients requires further classification. For a class of spherically symmetric space‐time admitting G3
Daud Ahmad +2 more
wiley +1 more source
Automorphisms and opposition in twin buildings
, 2012 We show that every automorphism of a thick twin building interchanging the halves of the building maps some residue to an opposite one. Furthermore we show that no automorphism of a locally finite 2-spherical twin building of rank at least 3 maps every ...
Devillers, Alice +2 more
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Incremental Localization Algorithm Based on Regularized Iteratively Reweighted Least Square
Foundations of Computing and Decision Sciences, 2016 Incremental localization algorithm is a distributed localization method with excellent characteristics for wireless network. However, its estimated result is generally influenced by the heteroscedasticity arising from cumulative errors and the ...
Yan Xiaoyong +4 more
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Concircular vector fields for Kantowski Sachs and Bianchi type III spacetimes
, 2017 This paper intends to obtain concircular vector fields of Kantowski Sachs and Bianch type III spacetimes. For this purpose, ten conformal Killing equations and their general solution in the form of conformal Killing vector fields are derived along with ...
Ali, Ahmad T +2 more
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