Errata
************ Unfixed Typos in 4th Edition ****************

p. 29. There is a typo in the objective function in the example. The coefficient
multiplying \(\sf x_2 \) should be \(\sf +4 \) not \(\sf4.\) Also, after the first pivot the objective function
should include a \(\sf 1.5 \varepsilon_2 \) term.

p. 211. The sentence that reads "Hence, arc (f,c) must enter the spanning tree” should
read "Hence, arc (f,b) must enter the spanning tree” .