# symmetric operator

> densely defined operator on a Hilbert space whose domain is a subset of that of its adjoint and which equals its adjoint on its domain

**Wikidata**: [Q12152731](https://www.wikidata.org/wiki/Q12152731)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Symmetric_operator)  
**Source**: https://4ort.xyz/entity/symmetric-operator