The motif of HFM2006 logo:
The motif of HFM2006 logo is made from triangles of a primitive frustration unit in a hexagon. The arrows indicate the frustrated spins. The bottom castle is Osaka castle, which is the great symbol of Osaka and has been built by the Shogun Hideyoshi Toyotomi in end of 16th century. It has a history of more than 400 years. Special features of Osaka castle are that it has three stages and 8 floors, which does provide a good view over Osaka.
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