de Alba, Hernán; Carballosa, Walter; Leaños, Jesús; Rivera Martínez, Luis Manuel (Combinatorial Mathematics Society of Australasia (CMSA) by The University of Queensland, 2020)
Let G be a graph of order n and let k ∈ {1, . . . , n−1}. The k-token graph
Fk(G) of G is the graph whose vertices are the k-subsets of V (G), where
two vertices are adjacent in Fk(G) whenever their symmetric difference
is ...