%0 Journal Article
%T Ultrametricity and metric betweenness in tangent spaces to metric spaces
%A O. Dovgoshey
%A D. Dordovskyi
%J Mathematics
%D 2009
%I arXiv
%X The paper deals with pretangent spaces to general metric spaces. An ltrametricity criterion for pretangent spaces is found and it is closely related to the metric betweenness in the pretangent spaces.
%U http://arxiv.org/abs/0904.4356v1