1 “... by the author. The purpose of the course was to introduce students to the methods developed in the past few...”

2 Table of Contents: “... over the past decade -- Contributed papers -- The use of computers in near-ring theory -- Some results...”

3 “... of the significant advances in semiring theory over the past years and its new important applications in such areas...”

4 “... very interesting developments in the past twenty years. This book is an exposition of several related...”

5 “... the past few years, a range of new results have been obtained and a comprehensive account...”

6 “...The topic of this book, graded algebra, has developed in the past decade to a vast subject with new...”

7 “... theory. Every time that I had given such a course in the past fifteen years, the choice of the material...”

8 “... intensively studied over the past decades, such as Hopf modules, graded modules, Yetter-Drinfeld modules...”

9 “..., introduced in 1843 by Hamilton, found ap­ plications in the classical mechanics of the past century. Later...”

10 “... and with their collaborators over the past decade. -Chapter III on group cohomology and invariant theory has been revised...”

11 “...During the past decade the interaction between control theory and linear algebra has been ever...”

12 “... taught: talented but ap­ preciating review and reinforcement of past course work; willing to work hard...”

13 “...During the past twenty years many connections have been found between the theory of analytic...”

14 “... as having roots in the past, and sometimes having connec­ tions to other specialties in the present, we...”

15 “...In the past decade, category theory has widened its scope and now inter­ acts with many areas...”

16 “... in the past ten years. The actual writing of the book in this form was carried out at York University, Peking...”

17 “... to unify and simplify ideas wh ich appeared in a sizable number of re­ search articles during the past two...”

18

19 “...For the past several decades the theory of automorphic forms has become a major focal point...”

20 “... in this subject over the past fifteen years. The book also deals with a broader class of algebras, mutations...”