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内容説明 This book is devoted to the qualitative study of solutions of superlinear elliptic and parabolic partial differential equations and systems. This class of problems contains， in particular， a number of reaction-diffusion systems which arise in various mathematical models， especially in chemistry， physics and biology. The book is self-contained and up-to-date， taking special care on the didactical preparation of the material. It is devoted to problems that are intensively studied but have not been treated thus far in depth in the book literature.