Abstract:
We solve the topological classification problem for polar flows on closed four-dimensional manifolds whose set of saddle equilibrium states consists only of points having two-dimensional stable and unstable manifolds. It is shown that the Kirby diagram, which is a framed link on a sphere intersecting the flow trajectories, is a complete topological invariant for such flows.
This work was supported by the grant of the Russian Science Foundation
no. 21-11-00010,
https://rscf.ru/en/project/21-11-00010/,
except for Sec. 3, which was supported by the “Scientific Fund of the
National Research University "Higher School of Economics” (NIU HSE) program
in 2023, grant no. 23-00-028.
Citation:
E. Ya. Gurevich, I. A. Saraev, “Kirby diagram of polar flows on four-dimensional manifolds”, Mat. Zametki, 116:1 (2024), 45–66; Math. Notes, 116:1 (2024), 40–57