• ISO 31-11:1992

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    Quantities and units Part 11: Mathematical signs and symbols for use in the physical sciences and technology

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Withdrawn date:  13-05-2019

    Language(s):  English, French

    Published date:  30-12-1992

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    Gives general information about mathematical signs and symbols, their meanings, verbal equivalents, printing, notation of scalars, vectors and tensors and applications.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher International Organization for Standardization
    Status Withdrawn
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    ISO/IEC TR 19768:2007 Information technology Programming languages Technical Report on C++ Library Extensions
    DIN 32830-1:1992-01 GRAPHICAL SYMBOLS; GENERAL PRINCIPLES FOR THE FORMULATION OF GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT
    12/30245656 DC : 0 ISO/DIS 3951-2 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 2: GENERAL SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION OF INDEPENDENT QUALITY CHARACTERISTICS
    CEI UNI EN 80000-13 : 2009 QUANTITIES AND UNITS - PART 13: INFORMATION SCIENCE AND TECHNOLOGY
    CEI EN 60027-6 : 2008 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 6: CONTROL TECHNOLOGY
    IEC 60050-102:2007 International Electrotechnical Vocabulary (IEV) - Part 102: Mathematics - General concepts and linear algebra
    BS ISO 14617-2:2002 Graphical symbols for diagrams Symbols having general application
    CAN/CSA-ISO/IEC TR 24731-1:12 (R2016) Information technology - Programming languages, their environments and system software interfaces - Extensions to the C library - Part 1: Bounds-checking interfaces (Adopted ISO/IEC TR 24731:2007, first edition, 2007-09-01)
    BS 6002-2:2007 Sampling procedures for inspection by variables General guide to single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality characteristics
    DD ENV 12435:2000 Medical informatics. Expression of results of measurements in health sciences
    12/30247200 DC : 0 BS ISO 3951-1 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 1: SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION FOR A SINGLE QUALITY CHARACTERISTIC AND A SINGLE AQL
    IEEE 268-1992 American National Standard for Metric Practice
    CSA ISO/IEC TR 24731-1 : 2012 INFORMATION TECHNOLOGY - PROGRAMMING LANGUAGES, THEIR ENVIRONMENTS AND SYSTEM SOFTWARE INTERFACES - EXTENSIONS TO THE C LIBRARY - PART 1: BOUNDS-CHECKING INTERFACES
    DIN EN ISO 80000-4 E : 2013 QUANTITIES AND UNITS - PART 4: MECHANICS (ISO 80000-4:2006)
    CSA ISO/IEC 23270 : 2007 : R2012 INFORMATION TECHNOLOGY - PROGRAMMING LANGUAGES - C#
    BIS IS/ISO 80000-4 : 2006 QUANTITIES AND UNITS - PART 5: THERMODYNAMICS
    CSA ISO/IEC 24747 : 2012 INFORMATION TECHNOLOGY - PROGRAMMING LANGUAGES, THEIR ENVIRONMENTS AND SYSTEM SOFTWARE INTERFACES - EXTENSIONS TO THE C LIBRARY TO SUPPORT MATHEMATICAL SPECIAL FUNCTIONS
    BS ISO 3534-2:2006 Statistics. Vocabulary and symbols Applied statistics
    TR 7000-1 : 1 AEROSPACE SERIES - NON-METALLIC MATERIALS - RULES FOR THE DRAFTING AND PRESENTATION OF MATERIAL STANDARDS - PART 1: GENERAL RULES
    CEI UNI 70099 : 2010 INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM)
    UNE-ISO 3534-1:2013 Statistics -- Vocabulary and symbols -- Part 1: General statistical terms and terms used in probability
    UNE-EN ISO 80000-4:2014 Quantities and units - Part 4: Mechanics (ISO 80000-4:2006)
    I.S. HD 245.3:2001 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 3: LOGARITHMIC QUANTITIES AND UNITS
    BS EN ISO 80000-4:2013 Quantities and units Mechanics
    ECMA 334 : 5ED 2017 C# LANGUAGE SPECIFICATION
    ISO 3951-5:2006 Sampling procedures for inspection by variables Part 5: Sequential sampling plans indexed by acceptance quality limit (AQL) for inspection by variables (known standard deviation)
    PD ISO/TR 18569:2004 Safety of machinery. Guidelines for the understanding and use of safety of machinery standards.
    02/653401 DC : DRAFT FEB 2002 ISO/IEC 23270 - INFORMATION TECHNOLOGY - LANGUAGE SPECIFICATION
    EN 60617-12:1998 Graphical symbols for diagrams - Part 12: Binary logic elements
    EN 60027-3 : 2007 Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units
    EN 60027-2:2007 Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics
    OVE/ONORM EN 60027-2 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    05/30138626 DC : DRAFT SEP 2005 ISO/IEC 23270 - C# LANGUAGE SPECIFICATION
    DD ISO/TS 16610-1:2006 Geometrical product specifications (GPS). Filtration Overview and basic concepts
    BS ISO 3951-1:2013 Sampling procedures for inspection by variables Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL
    DIN 40900-12:1992-09 GRAPHICAL SYMBOLS FOR DIAGRAMS; BINARY LOGIC ELEMENTS
    04/30117245 DC : DRAFT JUL 2004 BS ISO 3534-2 - STATISTICS - VOCABULARY AND SYMBOLS - PART 2: APPLIED STATISTICS
    OIML V 2-200 : 2012 INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM)
    ISO/IEC 24747:2009 Information technology Programming languages, their environments and system software interfaces Extensions to the C Library to support mathematical special functions
    HD 60027-1:2004 Letter symbols to be used in electrical technology - Part 1: General
    DIN 1302:1999-12 General mathematical symbols and concepts
    DIN 5473:1992-07 LOGIC AND SET THEORY; SYMBOLS AND CONCEPTS
    BS EN 60027-2:2007 Letter symbols to be used in electrical technology Telecommunications and electronics
    BS 7477:1991 Guide for general principles for the creation of graphical symbols for use on equipment
    DD ENV 1614:1995 Healthcare informatics. Structure for nomenclature, classification and coding of properties in clinical laboratory science
    ASTM D 4826 : 1988 : R2002 Standard Practice for Units of Measurement and Conversion Factors for Pulp, Paper, and Paperboard
    UNI CEI EN ISO 80000-4 : 2013 QUANTITIES AND UNITS - PART 4: MECHANICS
    CSA ISO/IEC 23270 : 2007 : R2017 INFORMATION TECHNOLOGY - PROGRAMMING LANGUAGES - C#
    BS ISO/IEC 23270:2003 Information technology. C# Language Specification
    I.S. EN 60027-2:2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    ISO/TR 12343:1997 Road vehicles Symbols for electrotechnical diagrams
    CEI EN 60027-3 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 3: LOGARITHMIC AND RELATED QUANTITIES, AND THEIR UNITS
    ISO/IEC 23270:2006 Information technology Programming languages C#
    ISO/TR 18569:2004 Safety of machinery Guidelines for the understanding and use of safety of machinery standards
    IEC 60050-101:1998 International Electrotechnical Vocabulary (IEV) - Part 101: Mathematics
    IEC 60488-2:2004 Standard digital interface for programmable instrumentation - Part 2: Codes, formats, protocols and common commands
    IEC 61115:1992 Expression of performance of sample handling systems for process analyzers
    BS EN 12435:2006 Health informatics. Expression of results of measurements in health sciences
    BS 3939-12:1985 Guide for graphical symbols for electrical power, telecommunications and electronics diagrams Binary logic elements
    BS 6002-1:2007 Sampling procedures for inspection by variables Guide to single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL
    BS 0-3:1991 A standard for standards Guide to drafting and presentation of British Standards
    BS 3939-12:1991 Graphical symbols for electrical power, telecommunications and electronics diagrams Guide for binary logic elements
    ISO/IEC 11714-1:1996 Design of graphical symbols for use in the technical documentation of products — Part 1: Basic rules
    02/400873 DC : DRAFT OCT 2002 BS 6002-1 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 1: SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION FOR A SINGLE QUALITY CHARACTERISTIC AND A SINGLE AQL
    BS ISO 14617-6:2002 Graphical symbols for diagrams Measurement and control functions
    NFC 03 003 : 2003 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 3: LOGARITHMIC AND RELATED QUANTITIES, AND THEIR UNITS
    95/712874 DC : 0 PREN 4500-1 - AEROSPACE SERIES - METALLIC MATERIALS - RULES FOR DRAFTING AND PRESENTATION OF MATERIAL STANDARDS - PART 1: GENERAL RULES
    DD ISO/TS 19036 : 2006 MICROBIOLOGY OF FOOD AND ANIMAL FEEDING STUFFS - GUIDELINES FOR THE ESTIMATION OF MEASUREMENT UNCERTAINTY FOR QUANTITATIVE DETERMINATIONS
    UNI ISO 3534-1 : 2014 STATISTICS - VOCABULARY AND SYMBOLS - PART 1: GENERAL STATISTICAL TERMS AND TERMS USED IN PROBABILITY
    PD 6461-1:1985 Vocabulary of metrology Basic and general terms (international)
    09/30137436 DC : 0 BS ISO 24153 - RANDOM SAMPLING AND RANDOMIZATION PROCEDURES
    DIN EN ISO 80000-4:2013-08 QUANTITIES AND UNITS - PART 4: MECHANICS (ISO 80000-4:2006)
    08/30157012 DC : DRAFT JULY 2008 BS ISO 28640 - RANDOM VARIATE GENERATION METHODS
    IEEE 488.2 : 1992 STANDARD CODES, FORMATS, PROTOCOLS, AND COMMON COMMANDS FOR USE WITH IEEE 488.1-1987, IEEE STANDARD DIGITAL INTERFACE FOR PROGRAMMABLE INSTRUMENTATION
    CAN/CSA-ISO/IEC 24747:12 (R2016) Information technology - Programming languages, their environments and system software interfaces - Extensions to the C Library to support mathematical special functions (Adopted ISO/IEC 24747:2009, first edition, 2009-01-15)
    ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
    UNI CEI EN 80000-13 : 2009 QUANTITIES AND UNITS - PART 13: INFORMATION SCIENCE AND TECHNOLOGY
    BS EN 60617-12:1999 Graphical symbols for diagrams Binary logic elements
    ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability
    ISO/PAS 22853:2005 Ships and marine technology Computer applications Specification of Maritime Safety Markup Language (MSML)
    XP PREN 4500-1 : 1997 XP AEROSPACE SERIES - METALLIC MATERIALS - RULES FOR DRAFTING AND PRESENTATION OF MATERIAL STANDARDS - PART 1: GENERAL RULES
    I.S. EN 60027-6:2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 6: CONTROL TECHNOLOGY
    ISO 14617-2:2002 Graphical symbols for diagrams Part 2: Symbols having general application
    I.S. EN ISO 80000-4:2013 QUANTITIES AND UNITS - PART 4: MECHANICS (ISO 80000-4:2006)
    INCITS/ISO/IEC 9899 : 2012 INFORMATION TECHNOLOGY - PROGRAMMING LANGUAGES - C
    UNI ISO 3534-2 : 2014 STATISTICS - VOCABULARY AND SYMBOLS - PART 2: APPLIED STATISTICS
    NFC 01 101 : 1999 ELECTROTECHNICAL VOCABULARY - CHAPTER 101: MATHEMATICS
    I.S. EN 60027-1:2006 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 1: GENERAL
    IEC 60027-2:2005 Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics
    UNI CEI ISO 80000-4 : 2006 QUANTITIES AND UNITS - PART 4: MECHANICS
    ISO 14531-2:2004 Plastics pipes and fittings — Crosslinked polyethylene (PE-X) pipe systems for the conveyance of gaseous fuels — Metric series — Specifications — Part 2: Fittings for heat-fusion jointing
    10/30214897 DC : 0 BS ISO 3898 - BASES FOR DESIGN OF STRUCTURES - NAMES AND SYMBOLS OF PHYSICAL QUANTITIES - GENERIC QUANTITIES
    DEFSTAN 21-26(PT2)/2(2010) : 2010 REQUIREMENTS FOR THE DIGITAL REPRESENTATION OF SHIPBORNE DATA PARAMETERS - PART 2: GUIDE TO THE USE OF DEF STAN 21-26 PART 1 (FORMERLY NES 1026)
    BS EN 80000-13:2008 Quantities and units Information science and technology
    10/30239356 DC : 0 BS EN 4500-1 - AEROSPACE SERIES - METALLIC MATERIALS - RULES FOR DRAFTING AND PRESENTATION OF MATERIAL STANDARDS - PART 1: GENERAL RULES
    CSA ISO/IEC TR 19768 : 2008 : R2013 INFORMATION TECHNOLOGY - PROGRAMMING LANGUAGES - TECHNICAL REPORT ON C++ LIBRARY EXTENSIONS
    04/30126172 DC : DRAFT NOV 2004 EN 1614 - HEALTH INFORMATICS - STRUCTURE FOR NOMENCLATURE, CLASSIFICATION, AND CODING OF PROPERTIES IN CLINICAL LABORATORY SCIENCES
    04/30119227 DC : DRAFT SEP 2004 BS ISO 6002-2 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 2: GENERAL SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION OF INDEPENDENT QUALITY CHARACTERISTICS
    BS ISO 6243:1997 Climatic data for building design. Proposed system of symbols
    BS ISO 3534-1:2006 Statistics. Vocabulary and symbols General statistical terms and terms used in probability
    BS EN 60027-6:2007 Letter symbols to be used in electrical technology Control technology
    07/30126366 DC : 0 BS EN 80000-13 - QUANTITIES AND UNITS - PART 13: INFORMATION SCIENCE AND TECHNOLOGY
    ISO/TS 16610-1:2006 Geometrical product specifications (GPS) Filtration Part 1: Overview and basic concepts
    BS ISO 80000-4 : 2006 QUANTITIES AND UNITS - PART 4: MECHANICS
    UNE-ISO 3951-1:2012 Sampling procedures for inspection by variables -- Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL
    BS 6002-4:2006 Sampling procedures for inspection by variables Sequential sampling plans indexed by acceptance quality limit (AQL) for inspection by variables (known standard deviation)
    UNI CEI 70099 : 2008 INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM)
    NF EN 60027-2 : 2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS
    CSA ISO/IEC 23270 : 2007 INFORMATION TECHNOLOGY - PROGRAMMING LANGUAGES - C#
    PREN 2500/1 : 200P4 AEROSPACE SERIES - INSTRUCTIONS FOR THE DRAFTING AND USE OF METALLIC MATERIAL STANDARDS - PART 1: GENERAL REQUIREMENTS
    DEFSTAN 21-26(PT2)/1(2000) : 2000 REQUIREMENTS FOR THE DIGITAL REPRESENTATION OF SHIPBOARD DATA PARAMETERS - PART 2: GUIDE TO THE USE OF NES 1026 PART 1
    ISO/TS 16528:2002 Boilers and pressure vessels Registration of Codes and Standards to promote international recognition
    I.S. EN 60027-3:2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 3: LOGARITHMIC AND RELATED QUANTITIES, AND THEIR UNITS
    ASTM D 4826 : 1988 : R1997 Standard Practice for Units of Measurement and Conversion Factors for Pulp, Paper, and Paperboard
    ISO 14617-6:2002 Graphical symbols for diagrams Part 6: Measurement and control functions
    I.S. HD 60027-3:2004 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 3: LOGARITHMIC AND RELATED QUANTITIES, AND THEIR UNITS
    ISO 3461-1:1988 General principles for the creation of graphical symbols — Part 1: Graphical symbols for use on equipment
    ISO 80000-4:2006 Quantities and units Part 4: Mechanics
    IEC 60027-3:2002 Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units
    IEC 80000-13:2008 Quantities and units - Part 13: Information science and technology
    IEC 60416:1988 General principles for the formulation of graphical symbols
    IEC 60617-12:1997 Graphical symbols for diagrams - Part 12: Binary logic elements
    UNE-ISO 3951-2:2012 Sampling procedures for inspection by variables -- Part 2: General specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality characteristics
    IEC 60027-6:2006 Letter symbols to be used in electrical technology - Part 6: Control technology
    EN 60027-6:2007 Letter symbols to be used in elecrical technology - Part 6: Control technology
    EN ISO 80000-4:2013 Quantities and units - Part 4: Mechanics (ISO 80000-4:2006)
    ENV 12435 : 1999 MEDICAL INFORMATICS - EXPRESSION OF RESULTS OF MEASUREMENTS IN HEALTH SCIENCES
    BS EN 60027-3:2007 Letter symbols to be used in electrical technology Logarithmic and related quantities, and their units
    BS ISO 14531-2:2004 Plastics pipes and fittings. Crosslinked polyethylene (PE-X) pipe systems for the conveyance of gaseous fuels. Metric series. Specifications Fittings for heat-fusion jointing
    DIN 13301:1993-01 SPECIAL FUNCTIONS OF MATHEMATICAL PHYSICS - SYMBOLS AND CONCEPT
    UNE-ISO 3534-2:2013 Statistics -- Vocabulary and symbols -- Part 2: Applied statistics
    12/30258949 DC : 0 BS ISO 16610-1 - GEOMETRICAL PRODUCT SPECIFICATIONS (GPS) - FILTRATION - PART 1: OVERVIEW AND BASIC CONCEPTS
    BS IEC 60050-101:1998 International electrotechnical vocabulary Mathematics
    UNI ISO 3951-1 : 2014 SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 1: SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION FOR A SINGLE QUALITY CHARACTERISTIC AND A SINGLE AQL
    CAN/CSA-ISO/IEC TR 19768-08 (R2018) Information technology - Programming languages - Technical report on C++ library extensions (Adopted ISO/IEC TR 19768:2007, first edition, 2007-11-15)
    CEI EN 60027-1 : 2008 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 1: GENERAL
    DIN EN 60617-12:1999-04 GRAPHICAL SYMBOLS FOR DIAGRAMS - PART 12: BINARY LOGIC ELEMENTS
    I.S. HD 60027-1:2004 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 1: GENERAL
    BS EN 60027-1 : 2006 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 1: GENERAL
    BS 7998-3:2002 Letter symbols to be used in electrical technology Logarithmic and related quantities, and their units
    01/648266 DC : DRAFT MAY 2001 ISO/IEC FCD 15457-3 - IDENTIFICATION CARDS - THIN FLEXIBLE CARDS - PART 3: TEST METHODS
    DIN ISO 3534-1:2009-10 STATISTICS - VOCABULARY AND SYMBOLS - PART 1: GENERAL STATISTICAL TERMS AND TERMS USED IN PROBABILITY
    INCITS/ISO/IEC 23270 : 2003 INFORMATION TECHNOLOGY - C# LANGUAGE SPECIFICATION
    PREN 7001 : 200P1 AEROSPACE SERIES - PROCESS STANDARDS - RULES FOR THE DRAFTING AND PRESENTATION OF SURFACE TREATMENT STANDARDS
    ISO 3951-1:2013 Sampling procedures for inspection by variables — Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL
    ISO/TS 19036:2006 Microbiology of food and animal feeding stuffs Guidelines for the estimation of measurement uncertainty for quantitative determinations
    ISO/IEC TR 24731-1:2007 Information technology Programming languages, their environments and system software interfaces Extensions to the C library Part 1: Bounds-checking interfaces
    I.S. EN 80000-13:2008 QUANTITIES AND UNITS - PART 13: INFORMATION SCIENCE AND TECHNOLOGY
    ASTM D 4826 : 1988 : R2007 Standard Practice for Units of Measurement and Conversion Factors for Pulp, Paper, and Paperboard (Withdrawn 2010)
    I.S. EN 60617-12:1999 GRAPHICAL SYMBOLS FOR DIAGRAMS - BINARY LOGIC ELEMENTS
    ISO 14617-5:2002 Graphical symbols for diagrams Part 5: Measurement and control devices
    ISO 3534-2:2006 Statistics Vocabulary and symbols Part 2: Applied statistics
    BS EN 753-3:1999 Identification card systems. Intersector thin flexible cards Test methods
    EN 80000-13:2008 Quantities and units - Part 13: Information science and technology
    HD 245.3 : 200S3 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 3: LOGARITHMIC QUANTITIES AND UNITS
    EN 12435 : 2006 HEALTH INFORMATICS - EXPRESSION OF RESULTS OF MEASUREMENTS IN HEALTH SCIENCES
    HD 60027-3 : 200S1 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 3: LOGARITHMIC AND RELATED QUANTITIES, AND THEIR UNITS
    EN 60027-1:2006/A2:2007 LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 1: GENERAL
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