Results 61 to 70 of about 9,168 (183)
Spinors in extended Minkowski space
, 2023 The exterior algebra of Minkowski space naturally has the structure of a sixteen-dimensional Clifford algebra representation, and so can be used as the space of spinors.
Hanson, Jason
core
Some classifications of biharmonic Lorentzian hypersurfaces in Minkowski 5-space $\mathbb E^5_1$
, 2014 In this paper, we study Lorentzian hypersurfaces in Minkowski 5-space with non-diagonalizable shape operator whose characteristic polinomial is $(t-k_1)^2(t-k_3)(t-k_4)$ or $(t-k_1)^3(t-k_4)$. We proved that in these cases, a hypersurface is biharmonic if and only if it is minimal.
openaire +2 more sources
Long‐Time Solvability and Asymptotics for the 3D Rotating MHD Equations
Mathematische Nachrichten, Volume 299, Issue 6, Page 1480-1509, June 2026.ABSTRACT We consider the initial value problem for the 3D incompressible rotating MHD equations around a constant magnetic field. We prove the long‐time existence and uniqueness of solutions for small viscosity coefficient and high rotating speed. Moreover, we investigate the asymptotic behavior of solutions in the limit of vanishing viscosity and fast
Hiroki Ohyama
wiley +1 more source
Presentism in a World Denied Instantaneous Signals [PDF]
, 2011 The special theory of relativity (STR) is widely regarded as the primary threat to the otherwise intuitive presentist worldview. In particular, both the relativity and conventionality of simultaneity within STR appear to undermine presentism and support
Nasmith, Benjamin B
core
Variational tolerancing analysis taking thermomechanical strains into account: application to a high pressure turbine [PDF]
, 2014 The aim of this study is to propose a variational method of tolerancing analysis using a multiphysical approach. This method is based on operations on polytopes (Minkowski sum and intersection) and can be used to validate geometric specifications ...
TEISSANDIER, Denis +2 more
core +1 more source
Mathematical Methods in the Applied Sciences, Volume 49, Issue 9, Page 8681-8690, June 2026.ABSTRACT Consider wave equations with time derivative nonlinearity and time‐dependent propagation speed which are generalized versions of the wave equations in the Friedmann–Lemaître–Robertson–Walker (FLRW) spacetime, the de Sitter spacetime and the anti‐de Sitter space time.
Kimitoshi Tsutaya, Yuta Wakasugi
wiley +1 more source
On Bertrand and spherical PH-curves in Minkowski 3-space
, 2023 Bu tez 5 bölümden oluşmaktadır. İlk bölüm giriş kısmına ayrılmıştır. İkinci bölümde, Öklid 3-uzayı ve Minkowski 3-uzayındaki temel kavramlar ve teoremler verilmiştir.
Soğat, Burcu Gür
core
Unified treatment of null and spatial infinity IV: angular momentum at null and spatial infinity
Journal of High Energy PhysicsIn a companion paper [1] we introduced the notion of asymptotically Minkowski spacetimes. These space-times are asymptotically flat at both null and spatial infinity, and furthermore there is a harmonious matching of limits of certain fields as one ...
Abhay Ashtekar, Neev Khera
doaj +1 more source
Optically Transparent Ka‐Band Absorber With Multi‐Fractal Rings and a Metal Mesh Ground Plane
Microwave and Optical Technology Letters, Volume 68, Issue 6, June 2026.ABSTRACT An optically transparent absorber based on multi‐fractal ring resonators and a metal mesh ground plane is presented for Ka‐band applications. By merging multiple resonances, the proposed absorber maintains an absorption bandwidth from 25.8 to 31.1 GHz.
Junseong Bae +6 more
wiley +1 more source
Differential geometry of curves inLorentz-Minkowski space
, 2022 Fen Bilimleri Enstitüsü, Matematik Ana Bilim Dalı, Geometri Bilim DalıBu tez üç bölümden oluşmaktadır. Birinci bölümde, ön hazırlık olarak, Öklid uzayındaki temel tanım ve teoremler verilmiştir. İkinci bölümde, bir sonraki bölüme hazırlık olarak, Lorentz-
Kılıç, Furkan
core