Bücher von Richard

J.R.R.Tolkien's "The Lord of the Rings", it has long been recognized, was shaped and undergirded by his Christian beliefs. But he was not the only writer of fantasy to have a close relationship between his faith and his fiction. This book is a study of such relationships in four writers: Tolkien himself, his friends C.S. Lewis and Charles Williams, and, from an earlier generation, George MacDonald. It seeks to look at their use of other worlds and other beings; at their attitudes towards 'escapism'; at the presence of symbolism and myth in their writings; at the themes and ideas they had in common; and at the extent to which their fiction has a value for Christian apologetics.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

From the Preface: (...) The book is addressed to students on various levels, to mathematicians, scientists, engineers. Instead of obstructing the access to the wealth of facts by lengthy discussions of a fundamental nature we have sometimes postponed such discussions to appendices in the various chapters.

From the reviews: "...one of the best textbooks introducing several generations of mathematicians to higher mathematics. ... This excellent book is highly recommended both to instructors and students." --Acta Scientiarum Mathematicarum, 1991

From the reviews: "...one of the best textbooks introducing several generations of mathematicians to higher mathematics. ... This excellent book is highly recommended both to instructors and students." --Acta Scientiarum Mathematicarum, 1991

Courant and Friedrich's classical treatise was first published in 1948 and tThe basic research for it took place during World War II. It treats the dynamics of compressible fluids in mathematical form, and attempts to present a systematic theory of nonlinear wave propagation, particularly in relation to gas dynamics.