Geodesic
Some theorems on Chebyshev sets
Matematičeskie zametki, Tome 11 (1972) no. 2, pp. 135-144.

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

We consider the class of $\delta$-suns which is used in the study of Chebyshev sets. We give sufficient conditions for a set to be a $\delta$-sun. We prove that, in a uniformly smooth Banach space, a weakly closed Chebyshev set is convex. 
@article{MZM_1972_11_2_a1,
     author = {L. P. Vlasov},
     title = {Some theorems on {Chebyshev} sets},
     journal = {Matemati\v{c}eskie zametki},
     pages = {135--144},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1972_11_2_a1/}
}
TY  - JOUR
AU  - L. P. Vlasov
TI  - Some theorems on Chebyshev sets
JO  - Matematičeskie zametki
PY  - 1972
SP  - 135
EP  - 144
VL  - 11
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1972_11_2_a1/
LA  - ru
ID  - MZM_1972_11_2_a1
ER  - 
%0 Journal Article
%A L. P. Vlasov
%T Some theorems on Chebyshev sets
%J Matematičeskie zametki
%D 1972
%P 135-144
%V 11
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1972_11_2_a1/
%G ru
%F MZM_1972_11_2_a1
L. P. Vlasov. Some theorems on Chebyshev sets. Matematičeskie zametki, Tome 11 (1972) no. 2, pp. 135-144. http://geodesic.mathdoc.fr/item/MZM_1972_11_2_a1/