On approximate Birkhoff-James orthogonality and normal cones in a normed space

Fuente: arXiv
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Autores principales: Sain, Debmalya, Paul, Kallol, mal, Arpita
Formato: Preprint
Publicado: 2017
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author Sain, Debmalya
Paul, Kallol
mal, Arpita
author_facet Sain, Debmalya
Paul, Kallol
mal, Arpita
contents We study two notions of approximate Birkhoff-James orthogonality in a normed space, from a geometric point of view, and characterize them in terms of normal cones. We further explore the interconnection between normal cones and approximate Birkhoff-James orthogonality to obtain a complete characterization of normal cones in a two-dimensional smooth Banach space. We also obtain a uniqueness theorem for approximate Birkhoff-James orthogonality set in a normed space.
format Preprint
id arxiv_https___arxiv_org_abs_1706_07715
institution arXiv
publishDate 2017
record_format arxiv
spellingShingle On approximate Birkhoff-James orthogonality and normal cones in a normed space
Sain, Debmalya
Paul, Kallol
mal, Arpita
Functional Analysis
46B20, 52A10
We study two notions of approximate Birkhoff-James orthogonality in a normed space, from a geometric point of view, and characterize them in terms of normal cones. We further explore the interconnection between normal cones and approximate Birkhoff-James orthogonality to obtain a complete characterization of normal cones in a two-dimensional smooth Banach space. We also obtain a uniqueness theorem for approximate Birkhoff-James orthogonality set in a normed space.
title On approximate Birkhoff-James orthogonality and normal cones in a normed space
topic Functional Analysis
46B20, 52A10
url https://arxiv.org/abs/1706.07715