Centralizers of Hamiltonian finite cyclic group actions on rational ruled surfaces

Pranav V. Chakravarthy, Martin Pinsonnault

Let $M=(M,\omega )$ be either the product $S^2\times S^2$ or the non-trivial $S^2$ bundle over $S^2$ endowed with any symplectic form $\omega$. Suppose a finite cyclic group $Z_n$ is acting e…