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ROYAUME-UNI --- LONDRES --- LONDRES --- ROYAUME-UNI --- LONDRES --- LONDRES

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Algebraic topology. --- Algebraic topology --- Topology --- Topologie algébrique --- Topologie algébrique

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With firm foundations dating only from the 1950s, algebraic topology is a relatively young area of mathematics. There are very few textbooks that treat fundamental topics beyond a first course, and many topics now essential to the field are not treated in any textbook. J. Peter May's "A Concise Course in Algebraic Topology" addresses the standard first course material, such as fundamental groups, covering spaces, the basics of homotopy theory, and homology and cohomology. In this sequel, May and his coauthor, Kathleen Ponto, cover topics that are essential for algebraic topologists and others interested in algebraic topology, but that are not treated in standard texts. They focus on the localization and completion of topological spaces, model categories, and Hopf algebras. The first half of the book sets out the basic theory of localization and completion of nilpotent spaces, using the most elementary treatment the authors know of. It makes no use of simplicial techniques or model categories, and it provides full details of other necessary preliminaries. With these topics as motivation, most of the second half of the book sets out the theory of model categories, which is the central organizing framework for homotopical algebra in general. Examples from topology and homological algebra are treated in parallel. A short last part develops the basic theory of bialgebras and Hopf algebras. (Source : Copac)

Topologie algébrique

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This book is about the people who always get taken for granted. The people who clean our offices and trains, care for our elders and change the sheets on the bed. Global Cities at Work draws on testimony collected from more than 800 foreign-born workers employed in low-paid jobs in London during the early years of the twenty-first century. This book breaks new ground in linking London's new migrant division of labour to the twin processes of subcontracting and increased international migration that have been central to contemporary processes of globalisation. It also raises the level of debate about migrant labour, encouraging us to look behind the headlines. The authors ask us to take a politically informed view of our urban labour markets and to prioritise the issue of poverty in underemployed communities.

Foreign workers --- Minorities --- Travailleurs étrangers --- Minorités --- Employment --- Social conditions --- Conditions sociales --- Travail --- England --- Angleterre --- Emigration and immigration --- Emigration et immigration --- Migrant labor --- Economic aspects. --- Travailleurs étrangers --- Minorités --- Labor, Migrant --- Migrant workers --- Migrants (Migrant labor) --- Migratory workers --- Transient labor --- Social conditions. --- Employees --- Casual labor --- Alien labor --- Aliens --- Foreign labor --- Guest workers --- Guestworkers --- Immigrant labor --- Immigrant workers --- Migrant labor (Foreign workers) --- Migrant workers (Foreign workers) --- Ethnic minorities --- Foreign population --- Minority groups --- Persons --- Assimilation (Sociology) --- Discrimination --- Ethnic relations --- Majorities --- Plebiscite --- Race relations --- Segregation --- Emigration and immigration. --- E-books --- Noncitizen labor --- Noncitizens --- Social problems --- Sociology of work --- anno 2000-2009 --- London --- Foreign workers - Employment - England - London --- Foreign workers - England - London - Social conditions --- Minorities - Employment - England - London --- England - Emigration and immigration --- Emigration and immigration.. --- Employment. --- Minority employment --- Affirmative action programs --- Immigration --- International migration --- Migration, International --- Population geography --- Colonization