What is a tree whose element has more than two parents?

Question

Data Structures

Hello, tell me what type of tree in which
a node can have more than two parents. A parent can also have more than two children.

Answer 1

There are no such trees. They are called "tree" because they look like trees - one trunk is divided into branches that branch further, but do not grow back. Trees always have exactly one parent.
If we consider an arbitrary graph with a bunch of parents and children, then most likely you mean an acyclic directed graph.