---
tag: JFBNSKY0B8
kind: concept
name: Ray
sources:
  - wikipedia: en:325802@r1373839425
    locator: Glossary of graph theory, section R
    note: adopted
    mention: wikipedia://en/325802#9N18
    sections: [Summary]
inventory: [Q31HT2MVHX]
---

## Summary

A ray, in an infinite graph, is an infinite simple path with exactly one endpoint. The ends of a graph are equivalence classes of rays.