In this book, Victor Turner is concerned with various kinds of social actions and how they relate to, and come to acquire meaning through, metaphors and paradigms in their actors' minds; how in certain circumstances new forms, new metaphors, new paradigms are generated. To describe and clarify these processes, he ranges widely in history and geography: from ancient society thro...(展开全部)

The book presents the basics of Riemannian geometry in its modern form as geometry of differentiable manifolds and the most important structures on them. The authors' approach is that the source of all constructions in Riemannian geometry is a manifold that allows one to compute scalar products of tangent vectors. With this approach, the authors show that Riemannian geometry ha...(展开全部)

This is an introduction to the basic tools of mathematics needed to understand the relation between knot theory and quantum gravity. The book begins with a rapid course on manifolds and differential forms, emphasizing how these provide a proper language for formulating Maxwell's equations on arbitrary spacetimes. The authors then introduce vector bundles, connections and curvat...(展开全部)

This is an introduction to the basic tools of mathematics needed to understand the relation between knot theory and quantum gravity. The book begins with a rapid course on manifolds and differential forms, emphasizing how these provide a proper language for formulating Maxwell's equations on arbitrary spacetimes. The authors then introduce vector bundles, connections and curvat...(展开全部)

This is an introduction to the basic tools of mathematics needed to understand the relation between knot theory and quantum gravity. The book begins with a rapid course on manifolds and differential forms, emphasizing how these provide a proper language for formulating Maxwell's equations on arbitrary spacetimes. The authors then introduce vector bundles, connections and curvat...(展开全部)

This is an introduction to the basic tools of mathematics needed to understand the relation between knot theory and quantum gravity. The book begins with a rapid course on manifolds and differential forms, emphasizing how these provide a proper language for formulating Maxwell's equations on arbitrary spacetimes. The authors then introduce vector bundles, connections and curvat...(展开全部)

The book presents the basics of Riemannian geometry in its modern form as geometry of differentiable manifolds and the most important structures on them. The authors' approach is that the source of all constructions in Riemannian geometry is a manifold that allows one to compute scalar products of tangent vectors. With this approach, the authors show that Riemannian geometry ha...(展开全部)

简介：这要从一个军团的建立开始说起…为了改变这腐朽不堪的社会，这个军团匿名成立，其中有两个神一样的天才科学家，十年后，这个世界被重置。不幸的是，这两个科学家居然有上一世的记忆，随着他们的联手，惊讶的发现竟然有许多人都有上一世的记忆…于是为了不打破这个世界的平衡，又一次重置，但所有人上上一世的记忆被消除。随着时间的推移，这两名科学家从朋友变成了敌人…在这一世两名科学家都发现了许多人仍然有前一世的记忆，但是两名科学家早就习惯了这个世界，但由于一个人鼓动一名科学家要重置这个世界，世界又一次重置…依旧，上上上和上上一世记忆消除。在现在这个世界里，所谓的记忆很少有人有，大多数都是另一个人格……不知道为什么，两名科学家总能以奇怪的方式见面…