OLLIVIER{RICCI IDLENESS FUNCTIONS OF GRAPHS.

Authors :: BOURNE, D. P.
CUSHING, D.
LIU, S.
MÜNCH, F.
PEYERIMHOFF, N.
Source :: SIAM Journal on Discrete Mathematics. 2018, Vol. 32 Issue 2, p1408-1424. 17p.
Publication Year :: 2018
Abstract: We study the Ollivier{Ricci curvature of graphs as a function of the chosen idleness. We show that this idleness function is concave and piecewise linear with at most three linear parts, and at most two linear parts in the case of a regular graph. We then apply our result to show that the idleness function of the Cartesian product of two regular graphs is completely determined by the idleness functions of the factors. [ABSTRACT FROM AUTHOR]