Simultaneous projectional skeletons
arXiv:1305.1438 · doi:10.1016/j.jmaa.2013.09.020
Abstract
We prove the existence of a simultaneous projectional skeleton for certain subspaces of spaces. This generalizes a result on simultaneous projectional resolutions of identity proved by M. Valdivia. We collect some consequences of this result. In particular we give a new characterization of Asplund spaces using the notion of projectional skeleton.