Edward Ullman

Edward Ullman was an influential American geographer, best known for his work in the fields of urban geography and spatial analysis. In the 1960s, he developed the "Multiple Nuclei Model" of urban structure, which describes how cities grow and develop around multiple centers of activity rather than a single downtown area. His research emphasized the importance of socioeconomic factors in urban planning and development. Ullman’s work contributed significantly to our understanding of urban dynamics, influencing both geography and urban studies, and helping planners create more effective city layouts and transportation systems.