A Moyal deformation of a Clifford Cl(3, 1) Gauge Theory of (Conformal) Gravity is performed for canonical noncommutativity (constant Θ parameters). In the very special case when one imposes certain constraints on the fields, there are no first order contributions in the Θ parameters to the Moyal deformations of Clifford gauge theories of gravity. However, when one does not impose constraints on...

This paper discusses Penrose spin networks in relation to the bracket polynomial.

We show that based on the mathematics of Markow processes and in particular based on the definition of Kramers-Moyal coefficients it is possible to estimate the deterministic part of the dynamics for a broad class of nonlinear noisy systems. In particular we show that for different kinds of noise perturbations, including non Langevin force with finite correlation time and independent measuremen...

We write the Kerr–Schild tetrads in terms of flat space–time and a (1, 1) tensor Sμλ. This can be considered as projection operator, since it transforms (i) into non-flat tetrads, vice-versa, (ii) Minkowski metric tensor, vice-versa. The Sμλ its inverse are constructed standard null vector field lμ that defines form general relativity, yields black holes non-linear gravitational waves solutions...

OBJECTIVES To investigate the static frictional resistance at the bracket/archwire interface in two recently introduced bracket systems and compare them to conventional ceramic and conventional metal bracket systems. Three variables were considered including the bracket system, archwire type and archwire angulation. MATERIAL AND METHODS Four bracket systems were tested in vitro: Self ligating...

different techniques have been introduced for the removal of ceramic brackets. since the early 1990s, lasers have been used experimentally for debonding ceramic brackets. the goal of this study is to give a comprehensive literature review on laser-aided ceramic bracket debonding. pubmed and google scholar databases were used to identify dental articles with the following combination of key word...