# ISO 80000-2:2009 Quantities and units—Part 2: Mathematical signs and symbols to be used in the natural sciences and technology

> published ISO standard

**Wikidata**: [Q26711931](https://www.wikidata.org/wiki/Q26711931)  
**Source**: https://4ort.xyz/entity/iso-80000-2-2009-quantities-and-units-part-2-mathematical-signs-and-symbols-to-be-used-in-the-natural-sciences-and-technology