arXiv subjects

K. NguyenVan

Publications and source records attributed to K. NguyenVan.

2 recordsLinked to original sources

arXiv2002

A Characterization of Extremal Sets in Hilbert Spaces

We give a characterization of extremal sets in Hilbert spaces that generalizes a classical theorem of H. W. E. Jung. We investigate also the behaviour of points near to the circumsphere of such a set with respect to the Kuratowski and Hausdorff measures of non-compactness.

math.MG↗

arXiv2002

A Geometric Characterization of Extremal Sets in ell_p Spaces

We give a geometric characterization of extremal sets in ell_p spaces that generalizes our previous result for such sets in Hilbert spaces.

math.MG↗