What is the polyhedra network?

Can you explain to me what the polyhedra network is? I'm interested in understanding the key features and functionality of this network, as well as its potential use cases and benefits in the world of cryptocurrency and finance. Is it a decentralized network? How does it work, and what sets it apart from other similar networks? I'd appreciate a clear and concise description that helps me grasp the basics of the polyhedra network.