Trees as data structures

In these notes for a series of lectures given at the University of Wollongong in the Winter of 1979 emphasis is on the structural aspects of trees, i.e., there is little concern with properties related to the information content of trees. Hence nothing will be found here on, for example, optimization of weighted trees, B-trees, or decision trees as used in artificial intelligence work. Some of the material is an adaptation of the author's research results. This research was partly supported by the National Science Foundation of the United States under Grants GJ-4l683 and MCS 77-01462.