id	keyword
ejpam-6643	soft
ejpam-6643	superhypergraph
ejpam-6643	set
ejpam-6643	a(c
ejpam-6643	fujita
ejpam-6643	graphs
ejpam-6643	sets
ejpam-6643	b(c
ejpam-6643	math
ejpam-6643	pure