In this paper, by using of Frobenius theorem a relation between Lie subalgebras of the Lie algebra of a top space T and Lie subgroups of T(as a Lie group) is determined. As a result we can consider these spaces by their Lie algebras. We show that a top space with the finite number of identity elements is a C^{∞} principal fiber bundle, by this method we can characterize top spaces.

We present a comprehensive analysis of the loop induced top quark FCNC signals at LHC within one class simplified model. The level interactions are well motivated to avoid hierarchy couplings from new physics and standard Such theory will posit Majorana dark matter candidate could be tested through relic density, direct detection experiments (the scattering between heavy nuclei), collider LHC. ...

Abstract In the process of longwall top coal caving, selection caving interval along advancing direction working face has an important effect on recovery. To explore a realistic face, panel 8202 in Tongxin Coal Mine is used as example, and 30 numerical simulation models are established by using Continuum-based Distinct Element Method software to study recovery with 4.0 m, 8.0 12.0 16.0 20.0 m 2...

We consider top-anti-top production near threshold in e+e− collisions, resumming Coulomb-enhanced corrections at next-to-next-to-leading order (NNLO). We also sum potentially large logarithms of the small top quark velocity at the next-toleading logarithmic level using the renormalization group. The NNLO correction to the cross section is large, and it leads to a significant modification of the...

Although numerous theoretical models implicate the prefrontal cortex (PFC) as a source of top-down control signals, empirical support is limited. In this review, we highlight direct evidence for this view of PFC function and discuss several lines of other supportive findings. Most evidence to-date is only suggestive due to methodological challenges in tracking the spatiotemporal dynamics of cor...