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. Author manuscript; available in PMC: 2010 Mar 9.
Published in final edited form as: Int J Comput Geom Appl. 2007;17(3):261–296. doi: 10.1142/S0218195907002331

Fig. 6.

Fig. 6

(a) Illustrating the reverse ordering of G. Columns Col(v) and Col(u) are in reverse order, (b) Constructing a properly ordered graph G′ from G (assume that a, v ∈ Q, u, b ∈ Q̄, and Q ∪ Q̄ = VB). Each vertex in a parenthesis is a corresponding vertex in G.