Any convex cone has an accumulation point in the base by the action of its automorphism group. In this paper, we prove the converse of this statement, more precisely, a convex domain $\Omega$ with a face $F$ of codimension 1 is a cone over $F$ if there is an Aut($\Omega$)-orbit accumulating at a point of $F$.
@article{1228226749,
author = {Jo, Kyeonghee},
title = {A characterization of convex cones},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {84},
number = {1},
year = {2008},
pages = { 175-178},
language = {en},
url = {http://dml.mathdoc.fr/item/1228226749}
}
Jo, Kyeonghee. A characterization of convex cones. Proc. Japan Acad. Ser. A Math. Sci., Tome 84 (2008) no. 1, pp. 175-178. http://gdmltest.u-ga.fr/item/1228226749/