#jsDisabledContent { display:none; } My Account | Register | Help

# Iso 80000-2

Article Id: WHEBN0036159537
Reproduction Date:

 Title: Iso 80000-2 Author: World Heritage Encyclopedia Language: English Subject: Collection: Publisher: World Heritage Encyclopedia Publication Date:

### Iso 80000-2

ISO 80000-2:2009 is a standard describing mathematical signs and symbols developed by the ISO 31-11 [1] The Standard, whose full name is Quantities and units — Part 2: Mathematical signs and symbols to be used in the natural sciences and technology, is a part of the group of standards called ISO/IEC 80000.

## Contents list

The Standard is divided into the following chapters:

• Foreword
• Introduction
1. Scope
2. Normative references
3. Variables, functions, and operators
4. Mathematical logic
5. Sets
6. Standard number sets and intervals
7. Miscellaneous signs and symbols
8. Elementary geometry
9. Operations
10. Combinatorics
11. Functions
12. Exponential and logarithmic functions
13. Circular and hyperbolic functions
14. Complex numbers
15. Matrices
16. Coordinate systems
17. Scalars, vectors, and tensors
18. Transforms
19. Special functions
• Annex A (normative) - Clarification of the symbols used
• Bibliography

## Symbols for variables and constants

Clause 3 specifies that variables such as and y, and functions in general (e.g., ƒ(x)) are printed in italic type, while mathematical constants are in roman (upright) type. Examples given of mathematical (upright) constants are e, π and i. The numbers 1, 2, 3, etc. are also upright.

## Function symbols and definitions

Clause 13 defines trigonometric and hyperbolic functions such as sin and tanh and their respective inverses arcsin and artanh.

## References

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.

Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.