The vorticity of world-lines observers associated with the rotation a massive body was reported by Lense and Thirring more than century ago. In their example, frame-dragging effect induced is directly (explicitly) related to source. However, in many other cases, it not so, origin remains obscure difficult identify. Accordingly, order unravel this issue, looking for ultimate frame-dragging, we a...

Current digital video representations emphasize compression eeciency, lacking some of the exibility required for interactive manipulation of digital bitstreams. In this work, we present a video representation which can encompass both space and time, providing a temporally coherent description of video sequences. The video sequence is segmented into its component objects, and the trajectory of e...

in this paper, we define and study the notion of the real-valued functions on a frame $l$. we show that $f(l) $, consisting of all frame homomorphisms from the power set of $mathbb{r}$ to a frame $ l$, is an $f$-ring, as a generalization of all functions from a set $x$ into $mathbb r$. also, we show that $f(l) $ is isomorphic to a sub-$f$-ring of $mathcal{r}(l)$, the ring of real-valued continu...