Global city
A city that concentrates global economic, political, and cultural connections and exerts influence beyond its national borders.
World city network: A network of cities connected by flows of advanced services, information, capital, and people. It describes the intercity connections through which global-city influence is organized.
Patrick Geddes: A Scottish biologist, sociologist, and urban planner who developed early ideas about world cities. His early twentieth-century writing helped establish the language of cities with worldwide reach.
New York City: The largest city in the United States and a major center of finance, media, diplomacy, and culture. Its concentration of global institutions and markets makes it a canonical example.
Global city index: A ranking that scores cities using selected indicators of economic, social, or political influence. Indexes turn a multidimensional concept into rankings that can disagree about leading cities.
Global city formation: The restructuring of a city as it becomes more integrated into global economic networks. It names the urban transformation associated with expanding international functions.
Advanced producer services: Specialized business services, including law, accounting, advertising, and consulting, used by corporations and institutions. Their concentration links firms and clients across national borders.
Peter Hall: A British urbanist whose 1966 book examined major cities and their international functions. His comparative account helped frame the study of world-city roles.
London: The capital of the United Kingdom and a major international center for finance, law, and culture. Its financial and professional-service networks extend well beyond Britain.
Alpha cities: Cities classified as highly connected nodes in the GaWC research network of advanced producer services. This network-based classification differs from broader definitions of global-city influence.
Gentrification: The reinvestment and demographic change of urban neighborhoods, often accompanied by displacement. Global investment can raise land values and intensify displacement pressures.