50 citations · 141 across the 19 of their papers we have counts for
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physics.data-an2013★ 50 cited
Statistical properties of position-dependent ball-passing networks in football games
Takuma Narizuka, Ken Yamamoto, Yoshihiro Yamazaki
Statistical properties of position-dependent ball-passing networks in real football games are examined. We find that the networks have the small-world property, and their degree di…
math.CO2013★ 2 cited
Fractal patterns related to dividing coins
Ken Yamamoto
The present paper formulates and solves a problem of dividing coins. The basic form of the problem seeks the set of the possible ways of dividing coins of face values 1,2,4,8,... b…