Shin-Ichi Nishiyama is on CollEc

rank value
closeness 21032 5.33093
betweenness 16151 0.448937

co-authors

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