  In this paper, we will regularize the holographic entanglement entropy,
holographic complexity and fidelity susceptibility for a configuration of
D3-branes. We will also study the regularization of the holographic complexity
from action for a configuration of D3-branes. It will be demonstrated that for
a spherical shell of D3-branes the regularized holographic complexity is always
greater than or equal to than the regularized fidelity susceptibility.
Furthermore, we will also demonstrate that the regularized holographic
complexity is related to the regularized holographic entanglement entropy for
this system. Thus, we will obtain a holographic bound involving regularized
holographic complexity, regularized holographic entanglement entropy and
regularized fidelity susceptibility of a configuration of D3-brane. We will
also discuss a bound for regularized holographic complexity from action, for a
D3-brane configuration.
