Published online by Cambridge University Press: 20 November 2018
The purpose of this note is to extend to an arbitrary generalized Hopf and Calabi-Eckmann manifold the following result of Kalyan Mukherjea: Let
${{V}_{n}}={{\mathbb{S}}^{2n+1}}\times {{\mathbb{S}}^{2n+1}}$ denote a Calabi-Eckmann manifold. If
$f,g:\,{{V}_{n}}\to {{\mathbb{P}}^{n}}$ are any two holomorphic maps, at least one of them being non-constant, then there exists a coincidence:
$f(x)\,=\,g(x)$ for some
$x\in {{V}_{n}}$. Our proof involves a coincidence theorem for holomorphic maps to complex projective varieties of the form
$G/P$ where
$G$ is complex simple algebraic group and
$P\,\subset \,G$ is a maximal parabolic subgroup, where one of the maps is dominant.