There where some minor misprints ¡­

There where some minor misprints and inaccuracies in Ark2. New version on the web. Exercise 19: b) n must be greater than or equal to 2 Exercise 20: the e should be a 3 Exercise 21: n must be greater than or equal to 3

Exercise 24: The first matrix is not a permutation as it stands! Extra exercise: Why? I have changed it to the one in the book.

Geir