  The paper concerns fractal homeomorphism between the attractors of two
bi-affine iterated function systems. After a general discussion of bi-affine
functions, conditions are provided under which a bi-affine iterated function
system is contractive, thus guaranteeing an attractor. After a general
discussion of fractal homeomorphism, fractal homeomorphisms are constructed for
a specific type of bi-affine iterated function system.
