Let T be a T-set, i.e., a finite set of nonnegative integers satisfying 0 ∈ T,
and G be a graph. In the paper we study relations between the T-edge spans
espT
(G) and espd⊙T
(G), where d is a positive integer and
d ⊙ T = {0 ≤ t ≤ d (max T + 1): d |t ⇒ t/d ∈ T} .
We show that espd⊙T
(G) = d espT
(G) − r, where r, 0 ≤ r ≤ d − 1, is an
integer that depends on T and G. Next we focus on the case T = {0} and
show that
espd⊙{0}
(G) =...