Supplements
 Definitions of the concept of a function
 Some Early History of Set Theory
 Dedekind cuts
 Farey sequences
 Cardinal numbers
 Continued fractions
 The golden ratio
 Space filling curves
 More about the deltafunction

Exercises
 Exercises 1
 Exercises 2
 Exercises 3
 Exercises 4
 Exercises 5
 Exercises 6
 Exercises 7
 Exercises 8
 Exercises 9
 Exercises 10
