Chu chen ni ye xue bu hui

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Lewis H. Ryder

This book is a modern pedagogic introduction to the ideas and techniques of quantum field theory. After a brief overview of particle physics and a survey of relativistic wave equations and Lagrangian methods, the quantum theory of scalar and spinor fields, and then of gauge fields, is developed. The emphasis throughout is on functional methods, which have played a large part in modern field theory. The book concludes with a brief survey of 'topological' objects in field theory and, new to this edition, a chapter devoted to supersymmetry.

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Helge Holden ... [et al

Operator splitting (or the fractional steps method) is a very common tool to analyze nonlinear partial differential equations both numerically and analytically. By applying operator splitting to a complicated model one can often split it into simpler problems that can be analyzed separately. In this book one studies operator splitting for a family of nonlinear evolution equations, including hyperbolic conservation laws and degenerate convection-diffusion equations. Common for these equations is the prevalence of rough, or non-smooth, solutions, e.g., shocks.

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Peter Wortsman

Cold Earth Wanderers by Peter Wortsman is a science fiction novel set in a completely built up world where vertical values are prized while all horizontal tendencies are suspect. 16 year old Elgin Marble has had enough of a world that is decidedly vertical. When his father, an upstanding elevator man, is marked for disposal, Elgin joins an underground group called the Crabs. This illicit group tirelessly digs tunnels in the hope of one day breaking through to the outside. But who are the Crabs, and can they be trusted? His mother, Ellen, is worried sick about her son. The ruthless school principal, Mr. Orion, warns her that Elgin is in big trouble and blackmails her for sexual favors. Together they go underground to search for the boy. Meanwhile, agents of the IVT (Institute for Vertical Thinking) are also hot on his trail, and the Crabs are feeling the heat.

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Harvey E. White, Donald H. White

This foundational text is written for students who want to go beyond the perceptual stage of music to learn how musical sound is created and perceived. It includes over 300 diagrams, photographs, and tables. Each chapter concludes with questions, problems, and projects, in addition to references for further study.--Provided by publisher.