ISO 31-11-1992 PDF
Name in English:
St ISO 31-11-1992
Name in Russian:
Ст ISO 31-11-1992
Original standard ISO 31-11-1992 in PDF full version. Additional info + preview on request
Full title and description
Quantities and units — Part 11: Mathematical signs and symbols for use in the physical sciences and technology. Gives general information about mathematical signs and symbols, their meanings and verbal equivalents, rules for printing, and notation of scalars, vectors and tensors and related applications.
Abstract
ISO 31-11:1992 specifies recommended mathematical signs and symbols for use in the physical sciences and technology, covering logical and set notation, arithmetic and complex-number symbols, functions and special functions, matrices, vectors and tensors, coordinate systems and miscellaneous mathematical relations, together with guidance on typographic presentation and verbal equivalents.
General information
- Status: Withdrawn (replaced by ISO 80000-2:2009).
- Publication date: December 1992 (edition published 30 December 1992).
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 01.060 (Quantities and units).
- Edition / version: Edition 2 (1992).
- Number of pages: 27 pages.
Scope
ISO 31-11 provides a coordinated set of recommended symbols and notations intended for scientific and technical documents so that mathematical expressions are unambiguous and consistent across disciplines. The scope includes logical operators and quantifiers, symbols for sets and relations, arithmetic and algebraic notation (including complex numbers), standard functions and special functions, matrix and vector notation, tensor notation and conventions for coordinates and indices, plus guidance on font styles and verbal equivalents. The part is a component of the ISO 31 family addressing quantities and units; its technical content was later incorporated into ISO 80000-2.
Key topics and requirements
- Standardization of mathematical signs and symbols used in physical sciences and technology (logical and set notation).
- Notation rules for scalars, vectors and tensors (including typographic conventions such as italic/roman/boldface).
- Conventions for matrices, indices, sums, products and common operators.
- Recommended symbols and names for functions and special functions and their verbal equivalents.
- Guidance on printing and presentation to reduce ambiguity in technical publications.
Typical use and users
Authors of scientific and technical documents, standards writers, editors, textbook authors, engineers, physicists and applied mathematicians use this part to ensure consistent notation across publications and technical specifications. Standards committees and publishers also reference it when establishing house styles for mathematical presentation.
Related standards
ISO 31-11 is one part of the ISO 31 series on quantities and units and was superseded and its material revised by ISO 80000-2 (Quantities and units — Part 2: Mathematical signs and symbols), first released in 2009 and further updated in later editions. National adoptions and related standards (for example, IEC/EN and national standards bodies) may provide parallel guidance for specific sectors.
Keywords
mathematical notation, symbols, quantities and units, vectors, tensors, matrices, functions, logical symbols, ISO 31, ISO 80000-2, typographic conventions.
FAQ
Q: What is this standard?
A: ISO 31-11:1992 is the ISO part that specified recommended mathematical signs and symbols for use in the physical sciences and technology.
Q: What does it cover?
A: It covers logical and set notation, arithmetic and complex-number symbols, notation for functions and special functions, matrix, vector and tensor notation, coordinate conventions, and guidance on printing and verbal equivalents of symbols.
Q: Who typically uses it?
A: Standard writers, authors of scientific and technical publications, editors, engineers, physicists and mathematicians use it to harmonize mathematical notation and remove ambiguity in technical documents.
Q: Is it current or superseded?
A: ISO 31-11:1992 has been withdrawn and its content was superseded by ISO 80000-2 (first published 2009). The ISO catalog lists ISO 31-11 as withdrawn.
Q: Is it part of a series?
A: Yes — it is part of the ISO 31 series (Quantities and units). The ISO 31 series was consolidated and replaced by the ISO/IEC 80000 series of standards.
Q: What are the key keywords?
A: Mathematical notation, symbols, vectors, tensors, matrices, functions, logical operators, quantities and units, ISO 31, ISO 80000-2.