In this paper the authors show an overview of Virtual Digital Mathematics Library in Japan (DML-JP), contents of which consist of metadata harvested from institutional repositories in Japan and digital repositories in the world. DML-JP is, in a sense, a subject specific repository which collaborate with various digital repositories. Beyond portal website, DML-JP provides subject-specific metadata through OAI-ORE. By the schema it is enabled that digital repositories can load the rich metadata which were added by mathematicians.
@article{arxiv.0907.3826,
title = {Experimental DML over digital repositories in Japan},
author = {Takao Namiki and Hiraku Kuroda and Shunsuke Naruse},
journal= {arXiv preprint arXiv:0907.3826},
year = {2009}
}