English

Uniform boundedness deciding sets, and a problem of M. Valdivia

Functional Analysis 2015-07-21 v2

Abstract

We prove that if a set BB in a Banach space XX can be written as an increasing, countable union B=nBnB=\cup_n B_n of sets BnB_n such that no BnB_n is uniform boundedness deciding, then also BB is not uniform boundedness deciding. From this we can give a positive answer to a question of M. Valdivia.

Cite

@article{arxiv.1409.0102,
  title  = {Uniform boundedness deciding sets, and a problem of M. Valdivia},
  author = {Olav Nygaard},
  journal= {arXiv preprint arXiv:1409.0102},
  year   = {2015}
}

Comments

The paper is withdrawn because there is a serious gap that I haven't been able to fill

R2 v1 2026-06-22T05:44:37.138Z