This book is composed of two texts, by R.L. Dobrushin and S. Kusuoka,
each representing the content of a course of lectures given by the
authors. They are pitched at graduate student level and are thus very
accessible introductions to their respective subjects for students and
non specialists. CONTENTS: R.L. Dobrushin: On the Way to the
Mathematical Foundations of Statistical Mechanics.- S. Kusuoka:
Diffusion Processes on Nested Fractals.