In this note we shall prove that for a continuous function , where , the paratingent of at is a non-empty and compact set in if and only if satisfies Lipschitz condition in a neighbourhood of . Moreover, in this case the paratingent is a connected set.
@article{bwmeta1.element.ojs-doi-10_17951_a_2016_70_2_91,
author = {Wojciech Zygmunt},
title = {On compactness and connectedness of the paratingent},
journal = {Annales Universitatis Mariae Curie-Sk\l odowska, sectio A -- Mathematica},
volume = {70},
year = {2016},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.ojs-doi-10_17951_a_2016_70_2_91}
}
Wojciech Zygmunt. On compactness and connectedness of the paratingent. Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica, Tome 70 (2016) . http://gdmltest.u-ga.fr/item/bwmeta1.element.ojs-doi-10_17951_a_2016_70_2_91/
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