---
tag: VWBPSP5715
kind: concept
name: Right-narrow
sources:
  - wikipedia: en:43580500@r1360947732
    locator: Glossary of set theory, section R
    note: adopted
    mention: wikipedia://en/43580500#MH4K
    sections: [Summary]
inventory: [F9WR3XB8XC]
---

## Summary

A partially ordered set, (α,≤) in which for all b in α, {c:c∈α∧b≤c} (the up-set of b) is a set.