Results 271 to 280 of about 2,437,992 (325)

Time scaling as an infinitesimal canonical transformation

Celestial Mechanics, 1987
We show that time scaling transformations for Hamiltonian systems are infinitesimal canonical transformations in a suitable extended phase space constructed from geometrical considerations. We compute its infinitesimal generating function in some examples: regularization and blow up in celestial mechanics, classical mechanical systems with homogeneous ...
J. Cariñena, L. A. Ibort, E. Lacomba
semanticscholar   +3 more sources

Infinitesimal Lorentz Transformation

American Journal of Physics, 1967
By means of a series of arguments, a general Lorentz transformation is derived in the infinitesimal. This gives the generators of the group, and exponentiation produces a finite transformation.
exaly   +2 more sources

Infinitesimal transformation for hyperspherical functions and Moshinsky coefficients

Nuclear Physics A, 1973
J. Raynal
exaly   +2 more sources

Crystallography of cubic to orthorhombic martensitic transformation based on the infinitesimal deformation approach in the alloy AuCu

Phase Transitions, 2003
N. Navruz
exaly   +2 more sources

Two-band k.p Hamiltonian of phosphorene based on the infinitesimal basis transformations approach

Superlattices and Microstructures, 2017
Narges Kafaei, Mohammad Sabaeian
exaly   +2 more sources

An infinitesimal renormalisation-group transformation for the site percolation problem

Journal of Physics C: Solid State Physics, 1980
B. Shapiro
exaly   +2 more sources

Geometry of Infinitesimal Harmonic Transformations

Annals of Global Analysis and Geometry, 2003
The vector field \(\xi\) is an infinitesimal harmonic transformation in a Riemannian manifold \((M, g)\) if the local one-parameter group of infinitesimal point transformations generated by the vector field \(\xi\) is a group of harmonic transformations.
Stepanov, Sergey E., Shandra, Igor G.
openaire   +1 more source

Infinitesimal F-planar transformations

Russian Mathematics, 2008
Let us consider a symmetric linear connection and \(F\), a tensor field of \((1,1)\)-type on a manifold \(A_n\). An infinitesimal transformation of \(A_n\) is called \(F\)-\textit{planar} it it maps \(F\)-planar curves onto curves which are \(F\)-planar in their principal parts.
Hinterleitner, I., Mikeš, J., Stránská, J.   +2 more
openaire   +1 more source

A novel (3+1)-dimensional sine-Gorden and a sinh-Gorden equation: Derivation, symmetries and conservation laws

Applied Mathematics Letters, 2021
In this paper, a novel (3+1)-dimensional sin-Gorden and sinh-Gorden eqaution are derived. These two equations are derived for the first time from the extended (3+1) dimensional zero curvature equation, using the compatibility condition.
Gangwei Wang
semanticscholar   +1 more source

Lie symmetry analysis for obtaining the abundant exact solutions, optimal system and dynamics of solitons for a higher-dimensional Fokas equation

, 2020
In this article, the Lie group of transformation method via one-dimensional optimal system is proposed to obtain some more exact solutions of the (4+1)-dimensional Fokas equation.
Sachin Kumar, Dharmendra Kumar, Amit Kumar   +2 more
semanticscholar   +1 more source