---
tag: 0VYCDGMJJJ
kind: concept
name: Row echelon form
msc: [15A06]
sources:
  - url: https://en.wikipedia.org/wiki/Row_echelon_form
    locator: lead section
same_as:
  wikidata: Q2091296
  wikipedia: Row echelon form
---

## Summary

A matrix is in row echelon form when its zero rows are at the bottom.
Also, the first nonzero entry of each row is to the right of the first nonzero entry of the row above.