  I propose and briefly define the concept of Urban Isobenefit Lines by using
functions as easy as efficient, whose results can offer a rich tool to use into
spatial equilibrium analysis involving cities. They are line joining urban
points with equal level of positional advantage from city amenities. The
results which one obtain by implementing a chosen function, gave specific
scenarios: numerically described by indicators and graphically visualized by
efficient city matrix views. This is also a theoretical concept for the Urban
Economics theory and Spatial Equilibrium analysis in cities.
