A note on partial isometries on pseudo-Hilbert spaces
arXiv:1302.3207
Abstract
The aim of this paper is to show that two accessible subspaces in the Loynes - space $\Hc$ are the initial and final space of a partial gramian isometry, respectively if the norm of the difference of the associated gramian selfadjoint projections is strictly less than 1.
arXiv comment6 pages, 12 references