S. Argyros

collaborators

3 papers

math.FA2026

Embedding $ℓ_{2}$ and $J$ into subspaces of $J T$ and $J T^{*}$

Spiros A. Argyros, Manuel Gonzalez, Pavlos Motakis

In the first part of the paper we show that every closed subspace of $J T$ or $J T^{*}$ contains $ℓ_{2}$ complemented in $J T$ or $J T^{*}$ respectively, and $J T$ contains uncomplemented…

math.FA2026

A Study of the Extreme Points in the Unit Ball of $J T$

Spiros A. Argyros

In this note, we investigate the extreme points of the unit ball of the James Tree space ( $J T$ ). We relate the geometric structure of $J T$ to the classical James space $J$ and prov…

math.FA2025

The Extreme Points of the Unit Ball of the James space $J$ and its dual spaces

Spiros A. Argyros, Manuel GonzÃ¡lez

We provide a new proof of S. Bellenot's characterization of the extreme points of the unit ball $B_{J}$ of James quasi-reflexive space $J$ . We also provide an explicit description of…

Embedding ℓ2​ and J into subspaces of JT and JT∗

A Study of the Extreme Points in the Unit Ball of JT

The Extreme Points of the Unit Ball of the James space J and its dual spaces

Embedding $ℓ_{2}$ and $J$ into subspaces of $J T$ and $J T^{*}$

A Study of the Extreme Points in the Unit Ball of $J T$

The Extreme Points of the Unit Ball of the James space $J$ and its dual spaces