%0 Journal Article %T A survey of subdivisions and local $h$-vectors %A Christos A. Athanasiadis %J Mathematics %D 2014 %I arXiv %X The enumerative theory of simplicial subdivisions (triangulations) of simplicial complexes was developed by Stanley in order to understand the effect of such subdivisions on the $h$-vector of a simplicial complex. A key role there is played by the concept of a local $h$-vector. This paper surveys some of the highlights of this theory and some recent developments, concerning subdivisions of flag homology spheres and their $\gamma$-vectors. Several interesting examples and open problems are discussed. %U http://arxiv.org/abs/1403.7144v2