The definition of the Metaverse in is a virtual space where users can interact with one other, and with their environment, via 3D digital objects and virtual avatars, in a complex manner that mimics the real world, holding things developed using artificial intelligence techniques; therefore, creating digital humans is essential to the development of the Metaverse and other Virtual Reality (VR), Augmented Reality (AR), Extended Reality (XR) applications.

[Full paper at: Mathematics 2023, 11(1), 96; https://doi.org/10.3390/math11010096 ]