BULLETIN OF THE LONDON MATHEMATICAL SOCIETY, v.55, no.1, pp.242 - 262
We study the relationship between the categorical entropy of the twist and cotwist functors along a spherical functor. In particular, we prove the categorical entropy of the twist functor coincides with that of the cotwist functor if the essential image of the right adjoint functor of the spherical functor contains a splitgenerator. We also see our results to generalize the computations of the categorical entropy of spherical twists and P-twists by Ouchi and Fan. As an application, we apply our results to the Gromov-Yomdin-type conjecture by Kikuta-Takahashi.