In mathematics and physics, non-Archimedean refers to something without the Archimedean property. This includes:
- Ultrametric space
- in particular, a domain with non-Archimedean absolute value
- notably, p-adic numbers <!-- Please do not change the p in p-adic number to a capital P; that would be incorrect. -->
- Non-Archimedean ordered field, namely:<!-- would dedicated list be more appropriate? or simply a category? -->
- Levi-Civita field
- Hyperreal numbers
- Surreal numbers
- Dehn planes