Results 11 to 20 of about 62,542 (292)
Frontiers in Astronomy and Space Sciences, 2023 In response to all current cosmological controversies, this paper provides a reliable explanation of the Hubble tension and of the apparent acceleration of space expansion detected by SN Ia.
Alessandro Trinchera
doaj +1 more source
Differential transcendence criteria for second-order linear difference equations and elliptic hypergeometric functions [PDF]
, 2019 We develop general criteria that ensure that any non-zero solution of a given second-order difference equation is differentially transcendental, which apply uniformly in particular cases of interest, such as shift difference equations, q-dilation ...
Arreche, Carlos E. +2 more
core +4 more sources
Metric-Affine Version of Myrzakulov F(R,T,Q,
Universe, 2021 We derive the full set of field equations for the metric-affine version of the Myrzakulov gravity model and also extend this family of theories to a broader one. More specifically, we consider theories whose gravitational Lagrangian is given by F(R,T,Q,T,
Damianos Iosifidis +2 more
doaj +1 more source
Entropy, 2018 We proposed in this work the introduction of a new vision of stochastic processes through geometry induced by dilation. The dilation matrices of a given process are obtained by a composition of rotation matrices built in with respect to partial ...
Maël Dugast +2 more
doaj +1 more source
A semi-staggered dilation-free finite volume method for the numerical solution of viscoelastic fluid flows on all-hexahedral elements [PDF]
, 2007 The dilation-free semi-staggered finite volume method presented in Sabin [M. Sahin, A preconditioned semi-staggered dilation-free finite volume method for the incompressible Navier-Stokes equations on all-hexahedral elements, Int. J. Numer.
Sahin, M, Wilson, HJ
core +1 more source
Wavelet transform of the dilation equation [PDF]
The Journal of the Australian Mathematical Society. Series B. Applied Mathematics, 1996 AbstractIn this article we study the dilation equation f(x) = ∑h ch f (2x − h) in ℒ2(R) using a wavelet approach. We see that the structure of Multiresolution Analysis adapts very well to the study of scaling functions. The equation is reduced to an equation in a subspace of ℒ2(R) of much lower resolution.
Cabrelli, Carlos A., Molter, Ursula M.
openaire +1 more source
A SINISTER VIEW OF DILATION EQUATIONS [PDF]
International Journal of Wavelets, Multiresolution and Information Processing, 2005 We present a technique for studying refinable functions which are compactly supported. Refinable functions satisfy dilation equations and this technique focuses on the implications of the dilation equation at the edges of the support of the refinable function.
openaire +2 more sources
A Dilation Invariance Method and the Stability of Inhomogeneous Wave Equations
Mathematics, 2019 We apply the method of a kind of dilation invariance to prove the generalized Hyers-Ulam stability of the (inhomogeneous) wave equation with a source, u t t ( x , t ) − c 2 ▵ u ( x , t ) = f ( x , t ) , for a class of real-valued
Ginkyu Choi, Soon-Mo Jung
doaj +1 more source
An exact solution of the metric-affine gauge theory with dilation, shear, and spin charges [PDF]
, 1996 The spacetime of the metric-affine gauge theory of gravity (MAG) encompasses {\it nonmetricity} and {\it torsion} as post-Riemannian structures. The sources of MAG are the conserved currents of energy-momentum and dilation, shear and spin.
Baekler +17 more
core +2 more sources
Energies, 2017 The water leak-off during hydraulic fracturing in shale gas reservoirs is a complicated transport behavior involving thermal (T), hydrodynamic (H), mechanical (M) and chemical (C) processes.
Fei Wang +3 more
doaj +1 more source