Results 101 to 110 of about 5,049,400 (221)

Frameness bound for frame of subspaces

open access: yesSahand Communications in Mathematical Analysis, 2014
In this paper, we show that in each nite dimensional Hilbert space, a frame of subspaces is an ultra Bessel sequence of subspaces. We also show that every frame of subspaces in a nite dimensional Hilbert space has frameness bound.
M. R. Abdollahpour, A. Shekari
doaj  

The gravitational path integral from an observer’s point of view

open access: yesJournal of High Energy Physics
One of the fundamental problems in quantum gravity is to describe the experience of a gravitating observer in generic spacetimes. In this paper, we develop a framework for describing non-perturbative physics relative to an observer using the ...
Ahmed I. Abdalla   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy