3.1 Introduction to Kirchhoff Laws
103
Fig. 3.2 Trees associated with the digraph G in Fig. 3.1b. (a) Tree T 1 . (b) Tree T 2 . (c) Tree T 3 . (d)
Tree T 4
Fig. 3.3 Cut-sets C 1 , C 2 and
C 3 associated with the tree T 3
of G in Fig. 3.1b. The
corresponding cotree is made
of the links {β 1 , β 3 , β 6 }
shown by dashed lines. Each
cut-set is specified by one of
the twigs β 2 , β 4 , and β 5
associated with the tree T 3 = {β 2 , β 4 , β 5 } are shown in Fig. 3.3. It is worth noting
that each cut-set includes just one twig of the tree, i.e., C 1 , C 2 and C 3 are associated
with β 2 , β 4 , and β 5 , respectively.