Commun. Math. Res., 31 (2015), pp. 373-382.
Published online: 2021-05
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In the paper we introduce the notions of the separation factor $κ$ and give a representive of metric projection on an $n$-codimension subspace (or an affine set) under certain conditions in Banach space. Further, we obtain the distance formula from any point $x$ to a finite $n$-codimension subspace. Results extend and improve the corresponding results in Hilbert space.
}, issn = {2707-8523}, doi = {https://doi.org/10.13447/j.1674-5647.2015.04.09}, url = {http://global-sci.org/intro/article_detail/cmr/18920.html} }In the paper we introduce the notions of the separation factor $κ$ and give a representive of metric projection on an $n$-codimension subspace (or an affine set) under certain conditions in Banach space. Further, we obtain the distance formula from any point $x$ to a finite $n$-codimension subspace. Results extend and improve the corresponding results in Hilbert space.