Affiliation : University of Tokyo    Tel : (+81) 3 5841 2687    Fax : (+81) 3 5841 2686    Addres : Bungakubu Annexe, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033    Email : i_inr@I.u_tokyo.ac.jp    Url : http://www.l.u-tokyo.ac.jp/IAS/    More : The term "Islamic World" is often used to refer to the regions of the Middle East; however, we know well that Islam as religion and civilization has spread beyond the Middle East to Central and Southeast Asia in the east, the Balkans and Africa in the west. Furthermore, in contemporary Western countries, and also in China and Japan, Muslims have formed important social groups. That is to say, regions closely related to Islam now encompass the world.