Introductory Map Theory

Introductory Map Theory

Author: Yanpei Liu

Publisher: Infinite Study

Published: 2010

Total Pages: 503

ISBN-13: 1599731347

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As an introductory work, this book contains the elementary materials in map theory, includingembeddings of a graph, abstract maps, duality, orientable and non-orientable maps, isomorphisms of maps and the enumeration of rooted or unrooted maps, particularly, thejoint tree representation of an embedding of a graph on two dimensional manifolds, whichenables one to make the complication much simpler on map enumeration. All of theseare valuable for researchers and students in combinatorics, graphs and low dimensionaltopology.A Smarandache system (Sigma;R) is such a mathematical system with at leastone Smarandachely denied rule r in R such that it behaves in at least two different wayswithin the same set Sigma, i.e., validated and invalided, or only invalided but in multiple distinctways. A map is a 2-cell decomposition of surface, which can be seen as a connectedgraphs in development from partition to permutation, also a basis for constructing Smarandachesystems, particularly, Smarandache 2-manifolds for Smarandache geometries.


Travel and Transformation

Travel and Transformation

Author: Garth Lean

Publisher: Routledge

Published: 2016-02-24

Total Pages: 253

ISBN-13: 1317006585

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Travel and tourism have a long association with the notion of transformation, both in terms of self and social collectives. What is surprising, however, is that this association has, on the whole, remained relatively underexplored and unchallenged, with little in the way of a corpus of academic literature surrounding these themes. Instead, much of the literature to date has focused upon describing and categorising tourism and travel experiences from a supply-side perspective, with travellers themselves defined in terms of their motivations and interests. While the tourism field can lay claim to several significant milestone contributions, there have been few recent attempts at a rigorous re-theorization of the issues arising from the travel/transformation nexus. The opportunity to explore the socio-cultural dimensions of transformation through travel has thus far been missed. Bringing together geographers, sociologists, cultural researchers, philosophers, anthropologists, visual researchers, literary scholars and heritage researchers, this volume explores what it means to transform through travel in a modern, mobile world. In doing so, it draws upon a wide variety of traveller perspectives - including tourists, backpackers, lifestyle travellers, migrants, refugees, nomads, walkers, writers, poets, virtual travellers and cosmetic surgery patients - to unpack a cultural phenomenon that has captured the imagination since the very first works of Western literature.


Caste

Caste

Author: Isabel Wilkerson

Publisher: Random House Trade Paperbacks

Published: 2023-02-14

Total Pages: 545

ISBN-13: 0593230272

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#1 NEW YORK TIMES BESTSELLER • OPRAH’S BOOK CLUB PICK • “An instant American classic and almost certainly the keynote nonfiction book of the American century thus far.”—Dwight Garner, The New York Times The Pulitzer Prize–winning, bestselling author of The Warmth of Other Suns examines the unspoken caste system that has shaped America and shows how our lives today are still defined by a hierarchy of human divisions—now with a new Afterword by the author. #1 NONFICTION BOOK OF THE YEAR: Time ONE OF THE BEST BOOKS OF THE YEAR: The Washington Post, The New York Times, Los Angeles Times, The Boston Globe, O: The Oprah Magazine, NPR, Bloomberg, The Christian Science Monitor, New York Post, The New York Public Library, Fortune, Smithsonian Magazine, Marie Claire, Slate, Library Journal, Kirkus Reviews Winner of the Carl Sandberg Literary Award • Winner of the Los Angeles Times Book Prize • National Book Award Longlist • National Book Critics Circle Award Finalist • Dayton Literary Peace Prize Finalist • PEN/John Kenneth Galbraith Award for Nonfiction Finalist • PEN/Jean Stein Book Award Longlist • Kirkus Prize Finalist “As we go about our daily lives, caste is the wordless usher in a darkened theater, flashlight cast down in the aisles, guiding us to our assigned seats for a performance. The hierarchy of caste is not about feelings or morality. It is about power—which groups have it and which do not.” In this brilliant book, Isabel Wilkerson gives us a masterful portrait of an unseen phenomenon in America as she explores, through an immersive, deeply researched, and beautifully written narrative and stories about real people, how America today and throughout its history has been shaped by a hidden caste system, a rigid hierarchy of human rankings. Beyond race, class, or other factors, there is a powerful caste system that influences people’s lives and behavior and the nation’s fate. Linking the caste systems of America, India, and Nazi Germany, Wilkerson explores eight pillars that underlie caste systems across civilizations, including divine will, bloodlines, stigma, and more. Using riveting stories about people—including Martin Luther King, Jr., baseball’s Satchel Paige, a single father and his toddler son, Wilkerson herself, and many others—she shows the ways that the insidious undertow of caste is experienced every day. She documents how the Nazis studied the racial systems in America to plan their outcasting of the Jews; she discusses why the cruel logic of caste requires that there be a bottom rung for those in the middle to measure themselves against; she writes about the surprising health costs of caste, in depression and life expectancy, and the effects of this hierarchy on our culture and politics. Finally, she points forward to ways America can move beyond the artificial and destructive separations of human divisions, toward hope in our common humanity. Original and revealing, Caste: The Origins of Our Discontents is an eye-opening story of people and history, and a reexamination of what lies under the surface of ordinary lives and of American life today.