Hyung-Joon Tag

collaborators

5 papers

math.FA2026

Geometry of quadratic forms over a uniparametric family of squares

J. Llorente, G. A. Muñoz-Fernández, D. L. Rodríguez-Vidanes +2

We characterize the extreme points of the parametric space of quadratic forms on $R^{2}$ endowed with the sup norm on the squares $□_{h} := [h, h + 1] \times [0, 1]$ with $…

math.FA2024

On various diametral notions of points in the unit ball of some vector-valued function spaces

Han Ju Lee, Ãscar RoldÃ¡n, Hyung-Joon Tag

In this article, we study the ccs-Daugavet, ccs- $I^$ , super-Daugavet, super- $I^$ , Daugavet, $I^$ , and $\nabla$ points in the unit balls of vector-valued function spaces $C_{0} (L, X)$ …

math.FA2024

New Results in Analysis of Orlicz-Lorentz spaces

Luis Bernal-GonzÃ¡lez, Daniel L. RodrÃguez-Vidanes, Juan B. Seoane-SepÃºlveda +1

In this article, we investigate the existence of closed vector subspaces (i.e.spaceability) in various nonlinear subsets of Orlicz-Lorentz spaces $I^_{I ¨ , w}$ , equipped with the Lux…

math.FA2024

Remarks on the Daugavet Property for Complex Banach Spaces

Han Ju Lee, Hyung-Joon Tag

In this article, we study the Daugavet property and the diametral diameter two properties in complex Banach spaces. The characterizations for both Daugavet and $I^$ -points are revi…

math.FA2024

On KÃ¶the duals of Orlicz-Lorentz spaces

Anna KamiÅska, Hyung-Joon Tag

In this article, we study a number of properties of the KÃ¶the duals $M_{I ¨ , w}$ of Orlicz-Lorentz spaces. An explicit description of the order-continuous subspace of $\ma…