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Geometric Aspects of $C^*$-Extreme Points

Operator Algebras 2025-12-24 v1

Abstract

We provide a characterization of the CC^*-extreme points of the closed unit ball of a von Neumann algebra and demonstrate that CC^*-extremality is equivalent to both linear extremality and strong extremality. As an application, we characterize certain classes of von Neumann algebras in terms of their CC^*-extreme points.

Keywords

Cite

@article{arxiv.2512.20101,
  title  = {Geometric Aspects of $C^*$-Extreme Points},
  author = {Neha Hotwani and T. S. S. R. K. Rao},
  journal= {arXiv preprint arXiv:2512.20101},
  year   = {2025}
}

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R2 v1 2026-07-01T08:38:07.092Z