This is a textbook for an introductory combinatorics course that can take up one or two semesters. An extensive list of problems, ranging from routine exercises to research questions, is included. In each section, there are also exercises that contain material not explicitly discussed in the preceding text, so as to provide instructors with extra choices if they want to shift t...(展开全部)

This is a textbook for an introductory combinatorics course that can take up one or two semesters. An extensive list of exercises, ranging in difficulty from "routine" to "worthy of independent publication", is included. In each section, there are also exercises that contain material not explicitly discussed in the text before, so as to provide instructors with extra choices if...(展开全部)

This is a textbook for an introductory combinatorics course lasting one or two semesters. An extensive list of problems, ranging from routine exercises to research questions, is included. In each section, there are also exercises that contain material not explicitly discussed in the preceding text, so as to provide instructors with extra choices if they want to shift the emphas...(展开全部)

“I had experienced absolute freedom—I had felt that my body was without boundaries, limitless; that pain didn’t matter, that nothing mattered at all—and it intoxicated me.” In 2010, more than 750,000 people stood in line at Marina Abramović’s MoMA retrospective for the chance to sit across from her and communicate with her nonverbally in an unprecedented durational performance ...(展开全部)

Thomas Cathcart 毕业于哈佛大学哈佛学院哲学专业，主要致力于医疗保健领域的工作，包括管理美国缅因州波特兰的艾滋病人寄养所。 Daniel Klein 毕业于哈佛大学哈佛学院哲学专业，美国作家，与Thomas Cathcart合著有Plato and a Platypus Walk into a Bar，该书为《纽约时报》畅销书，现已有26种语言的译本。

This is the second edition of a popular book on combinatorics, a subject dealing with ways of arranging and distributing objects, and which involves ideas from geometry, algebra and analysis. The breadth of the theory is matched by that of its applications, which include topics as diverse as codes, circuit design and algorithm complexity. It has thus become essential for worker...(展开全部)

A Window on Eternity is a stunning book of splendid prose and gorgeous photography about one of the biologically richest places in Africa and perhaps in the world. Gorongosa National Park in Mozambique was nearly destroyed in a brutal civil war, then was reborn and is now evolv-ing back to its original state. Edward O. Wilson’s personal, luminous description of the wonders of G...(展开全部)

As a child and parent walk down the block to the bay and turn to walk back home, evening falls upon the neighborhood. As the walk begins, the squirrels are in the yards, the boys are mowing lawns, a neighbor is baking a pie, and someone is mailing a letter. When the child and parent turn to walk back home, the apple pie is down from the windowsill, the leaves are raked up, an...(展开全部)