Hidden symmetries of -theory and its dynamical realization.
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Hidden symmetries of the gravitational contact structure of the classical phase space of general relativistic test particle
Josef Janyška (2014)
Archivum Mathematicum
The phase space of general relativistic test particle is defined as the 1-jet space of motions. A Lorentzian metric defines the canonical contact structure on the odd-dimensional phase space. In the paper we study infinitesimal symmetries of the gravitational contact phase structure which are not generated by spacetime infinitesimal symmetries, i.e. they are hidden symmetries. We prove that Killing multivector fields admit hidden symmetries of the gravitational contact phase structure and we give...
History of astroparticle physics and its component.
Cirkel-Bartelt, Vanessa (2008)
Living Reviews in Relativity [electronic only]
Homogeneous systems of higher-order ordinary differential equations
Mike Crampin (2010)
Communications in Mathematics
The concept of homogeneity, which picks out sprays from the general run of systems of second-order ordinary differential equations in the geometrical theory of such equations, is generalized so as to apply to equations of higher order. Certain properties of the geometric concomitants of a spray are shown to continue to hold for higher-order systems. Third-order equations play a special role, because a strong form of homogeneity may apply to them. The key example of a single third-order equation...
Huygens' principle for the non-self-adjoint scalar wave equation on Petrov type III space-times
W. G. Anderson, R. G. McLenaghan, F. D. Sasse (1999)
Annales de l'I.H.P. Physique théorique
Huygens' principle on Petrov type N space-times
V. Wünsch (1994)
Annales de l'I.H.P. Physique théorique
Hyperbolic methods for Einstein's equations.
Reula, Oscar A. (1998)
Living Reviews in Relativity [electronic only]
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