Example
- [i]i has infimum 0 but no
upper bound.
- [1-i]i has supremum 1 but no
lower bound.
- [1/i+1]i has supremum
1 and infimum 0.
- [i3*(-1)i]i
has no upper bound and no lower bound.
Infimum and supremum need not exist.
Author: Wolfgang Schreiner
Last Modification: December 14, 1999