A new construction of counterexamples to the bounded orbit conjecture
Abstract
The bounded orbit conjecture says that every homeomorphism on the plane with each of its orbits being bounded must have a fixed point. Brouwer's translation theorem asserts that the conjecture is true for orientation preserving homeomorphisms, but Boyles' counterexample shows that it is false for the orientation reversing case. In this paper, we give a more comprehensible construction of counterexamples to the conjecture. Roughly speaking, we construct an orientation reversing homeomorphisms $f$ on the square $J^2=[-1, 1]^2$ with $\omega(x, f)=\{(-1, 1), (1, 1)\}$ and $\alpha(x, f)=\{(-1, -1), (1, -1)\}$ for each $x\in (-1, 1)^2$. Then, by a semi-conjugacy defined by pushing an appropriate part of $\partial J^2$ into $(-1, 1)^2$, $f$ induces a homeomorphism on the plane, which is a counterexample.
Fields of Study & Subjects
Advanced Differential Equations and Dynamical Systems
Point processes and geometric inequalities
Mathematics and Applications
Publication details
- Journal / source
- Topological Methods in Nonlinear Analysis
- Pages
- 1–10
- Publication date
- 28 June 2026
- Language
- EN