English

Order denseness in free Banach lattices

Functional Analysis 2025-08-19 v1

Abstract

We prove a fundamental property: the free vector lattice FVL[E]FVL[E] over a Banach space E is order dense in the free p-convex Banach lattice FBL(p)[E],  1leqp,FBL^{(p)}[E],~~1 ^leq p \leq \infty, if and only if E is finite-dimensional. In a recent work, Oikhberg, Tradacete, Taylor, and Troitsky claimed that order denseness holds for all Banach spaces. We point out a gap in their proof, and consequently, any conclusions relying on this claim require reexamination -- a task we also undertake in this present paper. A key tool in our approach, which also leads to a partial answer to an open question recently posed by these authors.

Keywords

Cite

@article{arxiv.2508.11648,
  title  = {Order denseness in free Banach lattices},
  author = {Youssef Azouzi and Wassim Dhifaoui},
  journal= {arXiv preprint arXiv:2508.11648},
  year   = {2025}
}