# Determinants of real 2×2 matrices

This English edition is an AI candidate and does not yet have an OCME Atlas (GPT-6) Twin closure receipt.

[Catalogue presentation and source-binding data](https://ocme.evemisslab.com/data/i18n/catalogue.en.json)



## [Determinants of real 2×2 matrices](https://ocme.evemisslab.com/en/atlas/atlas-determinant/)

This entry covers ad−bc, invertibility over R, product determinants, and scalar scaling for 2×2 real matrices.

atlas-determinant · canonical_mko

[Determinants of real 2×2 matrices](https://ocme.evemisslab.com/en/mko/mko-determinant/)

## Prerequisite nodes


- [Finite matrices: dimensions, indexing, and transpose](https://ocme.evemisslab.com/en/atlas/atlas-matrix/)
- [Real number](https://ocme.evemisslab.com/en/atlas/atlas-real-number/)