Geodesic
Connectedness and solar properties of sets in normed linear spaces
Matematičeskie zametki, Tome 19 (1976) no. 2, pp. 267-278.

Voir la notice de l'article provenant de la source Math-Net.Ru

The connectedness of certain classes of suns is studied. In particular, it is proved that a compact sun is connected in a normed space. Every gamma sun is connected in a uniformly non-square Banach space. 
@article{MZM_1976_19_2_a11,
     author = {B. A. Koscheev},
     title = {Connectedness and solar properties of sets in normed linear spaces},
     journal = {Matemati\v{c}eskie zametki},
     pages = {267--278},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1976_19_2_a11/}
}
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B. A. Koscheev. Connectedness and solar properties of sets in normed linear spaces. Matematičeskie zametki, Tome 19 (1976) no. 2, pp. 267-278. http://geodesic.mathdoc.fr/item/MZM_1976_19_2_a11/