Shin-Ichi Nishiyama is on CollEc

rank value
closeness 21624 5.33093
betweenness 17461 0.439443

co-authors

  1. Ryo Kato [pka55]
  2. Masao Ogaki [pog9]
  3. WAKO WATANABE [pwa369]
  4. Ian Christensen [pch762]