This graduate/advanced undergraduate textbook contains a systematic and elementary treatment of finite groups generated by reflections. The approach is based on fundamental geometric considerations in Coxeter complexes, and emphasizes the intuitive geometric aspects of the theory of reflection groups. Key features include: many important concepts in the proofs are illustrated in simple drawings, which give easy access to the theory; a large number of exercises at various levels of difficulty; some Euclidean geometry is included along with the theory of convex polyhedra; no prerequisites are necessary beyond the basic concepts of linear algebra and group theory; and a good index and bibliography The exposition is directed at advanced undergraduates and first-year graduate students.
This book is the first comprehensive description of development of the Acipenserid fish published in the English language. It con tains the results of more than 40 years of studies by the authors and their colleagues. My own life in science has been intimately related both with the authors and the fish, which are the subject of this book. Therefore, it gives me a great pleasure to present to the English reader an expanded version of the book. Those interested in the history of biology must be well aware of the fact that genetics in the USSR was practically demolished by Lysenko at the session of the Lenin All-Union Academy of Agricultural Sciences in 1948. However, it is much less well known that other fundamental branches of biology were also persecuted at that time, experimental embryology (developmental mechanics) among them. As a result, many embryologists, in cluding the authors of this book, were forced to turn to more ap plied problems, this being the only way to continue research. They had to abandon amphibians and concentrate their efforts on sturgeon.
A collection of final dispatches by the famed journalist, including the first translation of the work that may have led to her murder Anna Politkovskaya won international fame for her courageous reporting. Is Journalism Worth Dying For? is a long-awaited collection of her final writing. Beginning with a brief introduction by the author about her pariah status, the book contains essays that characterize the self-effacing Politkovskaya more fully than she allowed in her other books. From deeply personal statements about the nature of journalism, to horrendous reports from Chechnya, to sensitive pieces of memoir, to, finally, the first translation of the series of investigative reports that Politkovskaya was working on at the time of her murder—pieces many believe led to her assassination. Elsewhere, there are illuminating accounts of encounters with leaders including Lionel Jospin, Tony Blair, George W. Bush, and such exiled figures as Boris Berezovsky, Akhmed Zakaev, Vladimir Bukovsky. Additional sections collect Politkovskaya’s non-political writing, revealing her delightful wit, deep humanity, and willingness to engage with the unfamiliar, as well as her deep regrets about the fate of Russia.
This graduate/advanced undergraduate textbook contains a systematic and elementary treatment of finite groups generated by reflections. The approach is based on fundamental geometric considerations in Coxeter complexes, and emphasizes the intuitive geometric aspects of the theory of reflection groups. Key features include: many important concepts in the proofs are illustrated in simple drawings, which give easy access to the theory; a large number of exercises at various levels of difficulty; some Euclidean geometry is included along with the theory of convex polyhedra; no prerequisites are necessary beyond the basic concepts of linear algebra and group theory; and a good index and bibliography The exposition is directed at advanced undergraduates and first-year graduate students.
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