We discuss a gauging procedure that allows us to construct lagrangians dictate the dynamics of an underlying Cartan geometry. In sense be made precise in paper, starting datum is Klein pair corresponding homogeneous space. What amounts construction geometry modelled on geometry, with gauge field defining connection. The lagrangian itself consists all gauge-invariant top-forms constructed from c...

We consider the gauging of SL(2, R) WZNW model by its nilpotent subgroup E(1). The resulting space-time of the corresponding sigma model is seen to collapse to a one dimensional field theory of Liouville. Gauging the diagonal subgroup E(1) × U (1) of SL(2, R) × U (1) theory yields an extremal three dimensional black string. We show that these solutions are obtained from the two dimensional blac...

Recently, gauged supergravities in three dimensions with Yang-Mills and ChernSimons type interactions have been constructed. In this article, we demonstrate that any gauging of Yang-Mills type with semisimple gauge group G0, possibly including extra couplings to massive Chern-Simons vectors, is equivalent on-shell to a pure Chern-Simons type gauging with non-semisimple gauge group G0⋉T ⊂ G, whe...

Abstract—Chaotic analysis has been performed on the river flow time series before and after applying the wavelet based de-noising techniques in order to investigate the noise content effects on chaotic nature of flow series. In this study, 38 years of monthly runoff data of three gauging stations were used. Gauging stations were located in Ghar-e-Aghaj river basin, Fars province, Iran. Noise le...

The problem of gauging a closed form is considered. When the target manifold is a simple Lie group G, it is seen that there is no obstruction to the gauging of a subgroup H ⊂ G if we may construct from the form a cocycle for the relative Lie algebra cohomology (or for the equivariant cohomology), and a general expression for these cocycles is given. Their formal similarity with the expressions ...

the discharge data used for hydrological modeling should be the long-term suitable random data without trend and jump which is followed a specific statistical distribution. in this study, the above mentioned conditions were evaluated for 31 years period (1974-2004) of annual mean discharge data of 10 gauging stations of west azarbaijan province. for this purpose, the non-parametric spearman cor...