A general class of iterative equations on the unit circle
Marek Cezary Zdun, Wei Nian Zhang (2007)
Czechoslovak Mathematical Journal
Similarity:
A class of functional equations with nonlinear iterates is discussed on the unit circle . By lifting maps on and maps on the torus to Euclidean spaces and extending their restrictions to a compact interval or cube, we prove existence, uniqueness and stability for their continuous solutions.