Hi all, my maxima installation uses I1-I* to name indeces of SUMs created by powerseries: INF ==== I1 2 I1 \ (- 1) x (%o1) > ------------- / (2 I1)! === I1 = 0 How do I change those I1 into "n" or maybe "k" ??? Any help? Thx Greetings -- Fabian Schuh