Abstract We present analytical results for the distribution of cover times random walks (RWs) on regular graphs consisting N nodes degree c ( ⩾ 3). Starting from a initial node at time t = 1, each step 2 an RW hops into neighbor its previous node. In some steps may visit new, yet-unvisited node, while in other it revisit that has already been visited before. The T C is number required to every ...

The polarized images of a synchrotron emitting ring are studied in the regular Hayward and Bardeen black hole spacetimes. These holes carry magnetic field terms gravity coupled to nonlinear electrodynamics. Results show that main features polarization rings similar these two As charge parameter increase, intensity electric vector position angle image plane increase Moreover, spacetime closer th...

We realise the first and second Grushin distributions as symmetry reductions of the 3-dimensional Heisenberg distribution and 4-dimensional Engel distribution respectively. Similarly, we realise the Martinet distribution as an alternative symmetry reduction of the Engel distribution. These reductions allow us to derive the integrability conditions for the Grushin and Martinet distributions and ...

background: the up-regulation of galectin-3, galectin-9, and galectin-15 expression in the luminal and glandular epithelium was reported in preparation of the endometrium for embryo implantation at the midlutheal phase. however, no data was available regarding the expression and the distribution pattern of galectin-8 in the human endometrium during a regular menstrual cycle. objective: the curr...