In this paper, applying for the Minkowski?s and H?lder?s integral
inequalities, we obtain four theorems about the (p, q)-mixed volume
involving the Lp centroid bodies and the Lp intersection bodies,
respectively. The former two theorems reveal the convexity of the
functionals related to the (p, q)-mixed volume, in terms of the dual
Blaschke addition introduced in [Journal of Geometric Analysis, 30 (2020)
3026-3034], and the latter two theorems expose the monotonicity of the other
functionals related to the (p, q)-mixed volume.