Higher category theory is generally regarded as technical and forbidding, but part of it is considerably more tractable: the theory of infinity-categories, higher categories in which all higher morphisms are assumed to be invertible. In Higher Topos Theory, Jacob Lurie presents the foundations of this theory, using the language of weak Kan complexes introduced by Boardman and Vogt, and shows how existing theorems in algebraic topology can be reformulated and generalized in the theory's new language. The result is a powerful theory with applications in many areas of mathematics. The book's first five chapters give an exposition of the theory of infinity-categories that emphasizes their role as a generalization of ordinary categories. Many of the fundamental ideas from classical category theory are generalized to the infinity-categorical setting, such as limits and colimits, adjoint functors, ind-objects and pro-objects, locally accessible and presentable categories, Grothendieck fibrations, presheaves, and Yoneda's lemma. A sixth chapter presents an infinity-categorical version of the theory of Grothendieck topoi, introducing the notion of an infinity-topos, an infinity-category that resembles the infinity-category of topological spaces in the sense that it satisfies certain axioms that codify some of the basic principles of algebraic topology. A seventh and final chapter presents applications that illustrate connections between the theory of higher topoi and ideas from classical topology.
In 1998, Jacob Lief, a 21-year-old American university student, met school teacher Malizole "Banks" Gwaxula in a township tavern in Port Elizabeth, South Africa. After bonding over beers and a shared passion for education, Gwaxula invited Lief to live with him in the township. Inspired by their fortuitous meeting—which brought together two men separated by race, nationality, and age-and by the spirit of ubuntu, roughly translated as "I am because you are"—the two men embarked on an unexpectedly profound journey. Their vision? To provide vulnerable children in the townships with what every child deserves-everything. Today, their organization, Ubuntu Education Fund, is upending conventional wisdom about how to break the cycle of poverty. Shunning traditional development models, Ubuntu has redefined the concept of scale, focusing on how deeply it can impact each child's life rather than how many it can reach. Ubuntu provides everything a child needs and deserves, from prenatal care for pregnant mothers to support through university-essentially, from cradle to career. Their child-centered approach reminds us that one's birthplace should not determine one's future. I Am Because You Are sets forth an unflinching portrayal of the unique rewards and challenges of the nonprofit world while offering a bold vision for a new model of development.
The third volume covers the period from 1860 to 1920, beginning with the Jews, slavery, and the Civil War, and concluding with the rise of Reform Judaism as well as the increasing spirit of secularization that characterized emancipated, prosperous, liberal Jewry before it was confronted by a rising tide of American anti-Semitism in the 1920s.
In 'Higher Topos Theory', Jacob Lurie presents the foundations of this theory using the language of weak Kan complexes introduced by Boardman and Vogt, and shows how existing theorems in algebraic topology can be reformulated and generalized in the theory's new language.
For the colonized person, objectivity is always directed against him" (Frantz Fanon). Colonized persons do not live on what we call (or used to call) the "colonies" alone. In general, objective reality, or the "facts of life", are very different depending on the kind of life you can afford. This goes for language as well; and it explains both the title of this book, and gives it its "raison d'être". It deals with power in language, and asks: Who is really in command when we use "our" language? And why does it make sense to talk about a language of power (or lack of it)? The powerful are the colonizers, the colonized are the powerless, in language as in geopolitics. Colonizers and colonized alike, however, are subject to the social and economic conditions prevailing in society and therefore, a thorough analysis of these conditions is a must for any socially-oriented theory of language use.
Medical nihilism is the view that we should have little confidence in the effectiveness of medical interventions. Jacob Stegenga argues persuasively that this is how we should see modern medicine, and suggests that medical research must be modified, clinical practice should be less aggressive, and regulatory standards should be enhanced.
Containing 40 stories in new translations by Tatar this celebration of the richness and dramatic power of the legendary fables also features 150 illustrations, many of them in color, by legendary painters.
Examines the effects of the California Work Opportunity and Responsibility to Kids (CalWORKs) program on work activity participation rates of welfare recipients, welfare caseloads, and outcomes for welfare leavers. While the CalWORKs reforms appear to have been responsible for some of the uniform improvement in outcomes shown by the analysis, the robust economy and other policy changes were probably also important.
In 1948, the poet Eugenio Montale published his Quaderno di traduzioni and created an entirely new Italian literary genre, the “translation notebook.” The quaderni were the work of some of Italy’s foremost poets, and their translation anthologies proved fundamental for their aesthetic and cultural development. Modern Italian Poets shows how the new genre shaped the poetic practice of the poet-translators who worked within it, including Giorgio Caproni, Giovanni Giudici, Edoardo Sanguineti, Franco Buffoni, and Nobel Prize-winner Eugenio Montale, displaying how the poet-translators used the quaderni to hone their poetic techniques, experiment with new poetic metres, and develop new theories of poetics. In addition to detailed analyses of the work of these five authors, the book covers the development of the quaderno di traduzioni and its relationship to Western theories of translation, such as those of Walter Benjamin and Benedetto Croce. In an appendix, Modern Italian Poets also provides the first complete list of all translations and quaderni di traduzioni published by more than 150 Italian poet-translators.
The First volume gives an overview of the enzymes involved in DNA synthesis and modification; the second volume deals with the RNA-enzymes. Although the major emphasis of the book is on eukaryotic enzymes, a separate chapter dealing with prokaryotic DNA repair enzymes has been included to discuss the major advances in this field in recent years. There are two separate chapters on RNA polymerases to provide a comprehensive coverage of the enzymes from lower eukaryotes, plants and higher eukaryotes.
“An original, compelling, and provocative exploration of ethical issues in our society, with thoughtful and balanced commentary. I have not seen anything like it.” —Alan Lightman, author of Einstein’s Dreams Drawing upon the author’s two decades teaching medical ethics, as well as his work as a practicing psychiatrist, this profound and addictive little book offers up challenging ethical dilemmas and asks readers, What would you do? A daughter gets tested to see if she’s a match to donate a kidney to her father. The test reveals that she is not the man’s biological daughter. Should the doctor tell the father? Or the daughter? A deaf couple prefers a deaf baby. Should they be allowed to use medical technology to ensure they have a child who can’t hear? Who should get custody of an embryo created through IVF when a couple divorces? Or, when you or a loved one is on life support, Who says you’re dead? In short, engaging scenarios, Dr. Appel takes on hot-button issues that many of us will confront: genetic screening, sexuality, privacy, doctor-patient confidentiality. He unpacks each hypothetical with a brief reflection drawing from science, philosophy, and history, explaining how others have approached these controversies in real-world cases. Who Says You’re Dead? is designed to defy easy answers and to stimulate thought and even debate among professionals and armchair ethicists alike.
Chronic venous disorders are a major health problem due to their wide prevalence and socio-economic considerations. This book is a comprehensive manual providing state- of- the- art information on the diagnosis and management of these common problems. Till recently venous disorders have been getting secondary attention as compared to their arterial counterpart. However, the last two decades witnessed major technological advancements and therapeutic strategies for these problems. Written with a surgical perspective, this monograph covers the latest developments and recommended procedures in an easy-to-read format guiding the surgeon to prepare a rational treatment plan. Supplemented with numerous figures and illustrations, the chapters update the readers with how to evaluate such patients in their practices, selection criteria for appropriate procedures and how to manage the complications. The book includes basics of venous disorders, primary varicose veins and recurrence after surgery, chronic venous insufficiency, venous ulcers and congenital venous malformations. Detailed coverage of endo-venous procedures such as radio-frequency ablation, laser ablation and foam sclerotherapy are additional essential features of this book. Primarily intended for the practicing general surgeon, this volume is also relevant for residents in general surgery and vascular surgery.
Immigration has always caused immense public concern, especially when the perception is that immigrants are not assimilating into society they way they should, or perhaps the way they once did. Americans are frustrated as they try to order food, hire laborers, or simply talk to someone they see on the street and cannot communicate with them because the person is an immigrant who has not fully adopted American culture or language. But is this truly a modern phenomenon? In From Immigrants to Americans, Jacob Vigdor offers a direct comparison of the experiences of immigrants in the United States from the mid-19th century to the present day. His conclusions are both unexpected and fascinating. Vigdor shows how the varying economic situations immigrants come from has always played an important role in their assimilation. The English language skills of contemporary immigrants are actually quite good compared to the historical average, but those who arrive without knowing English are learning at slower rates. He continues to argue that todayOs immigrants face far fewer OincentivesO to assimilate and offers a set of assimilation friendly policies. From Immigrants to Americans is an important book for anyone interested in immigration, either the history or the modern implications, or who want to understand why todayOs immigrants seem so different from previous generations of immigrants and how much they are the same. Co-published with the Manhattan Institute
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