Belonging

verb

1. To have its proper place.

   "Where does this document belong?"

2. (followed by to) To be part of, or the property of.

   "That house belongs to me."

3. (followed by to) To be the spouse or partner of.
4. (followed by to) To be an element of (a set). The symbol \in means belongs to.

   "Suppose x belongs to \mathbb{R}... (— written: x \in \mathbb{R})"

5. To be deserved by.