About BURKHALTER R
About Univ. Tsukuba, Tsukuba, JPN
About IMACHI M
About Yamagata Univ., Yamagata, JPN
About SHINNO Y
About Saga Univ., Saga, JPN
About YONEYAMA H
About Saga Univ., Saga, JPN
About Progress of Theoretical Physics
About sigma model
About projective geometry
About Field theory in general
About 模型
About 固定点