Shigeru's Scratchy Shelf

Our logo, Pentagonal Star, emblems a Pythagorean harmony.

Teaching (elementary.pdf added on 2022/12/21)
[mostly in Japanese]

Seminar (refreshed on 2018/4/2)

Research (clifford.pdf updated on 2018/4/2)

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Copyright 2010--2022 YAMAGAMI Shigeru
Last modified: 2022/12/21