ISBN

ISBN (International Standard Book Number) is a universal identification number assigned to a book or booklet for classification purposes. The ISBN is intended to identify individual books or different editions and is unique to every edition of the book except the reprint.
ISBN was created in 1966 in the UK and has been accepted as an ISO 2108 international standard since 1970. ISBN consists of 13 digits
Contents
1 ISBN structure 2 Methods for calculating check digit
3 See. also
4 Links
ISBN Structure
The International Standard Book Number consists of an ISBN, which is written in Latin letters regardless of the language of the book's publication, and a number of 10 or 13 digits. the new format is to increase the capacity of the ISBN system and use barcodes to identify editions. To do this, the prefix 978 or 979 is prefixed to the 10-digit ISBN and the corresponding check digit is recalculated. . Each part has the following meanings:
Language group or country ID. Established by the International ISBN Agency. The number of figures depends on the annual volume of books of the respective group. For example, for English-speaking countries, the group ID is 0 or 1, and the USSR and CIS countries are assigned an ID 5. Ukraine, in addition to the CIS group ID, also has a separate ID 966. More information is provided in full. This identifier is assigned by the country's national ISBN agency for each publisher. The official representative office of the International ISBN Agency in Ukraine, which can distribute ISBNs and assign identifiers for Ukrainian publishing houses, is the Ivan Fedorov Book Chamber of Ukraine. Publishers with the highest volume of book production are issued identifiers with the least number of characters, and vice versa - small publishers are assigned large identifiers up to seven characters long.
Book identifier. This is the serial number that the publisher assigns to their books. The number of digits of this identifier depends on the number of digits of the publisher ID: the more recent, the fewer books the publisher can assign an ISBN.
Check digit. The last digit (or letter X, denoting number 10) in the ISBN to check that it is correct. An ISBN is considered correct if the sum of the product of nine digits of a number with weights of 10 to 2 and a check digit is divisible by 11.
Example:
ISBN 5-02-013850-9
| | |

| | | + - check digit

| + ------ Book number in publishing house - 13850
| + ------------ Science Publishers
+ -------------- A Book Published in the USSR
For ISBNs, the Publisher turns to the national agency of the country authorized to distribute ISBNs. The procedure for obtaining ISBN blocks is paid. After a national agency assigns a separate identifier to this publishing house and issues a declared block of numbers, the publishing house can code its books, but cannot resell and use them with another publishing house. The number of ISBNs that a particular publisher publishes depends on its annual output.
Methods for calculating a reference number
The numerical control number for an ISBN can be calculated by two equivalent methods.
the digits of the number and the check digit should be divided by 11 without remainder. To determine the check digit, each digit in the number is multiplied by a weighting factor of 10 to 2. The check digit is defined as the difference between the sum of the products received and the nearest greater number, divisible by 11 without remainder. If the check digit is 10, it is denoted by the Roman numeral "X" in the full ISBN.
Example:
ISBN 5-02-013850-?
5 0 2 0 1 3 8 5 0 - digital part
10 9 8 7 6 5 4 3 2 - weights
50 0 16 0 6 15 32 15 0 - product of digits by weights
50 + 0 + 16 + 0 + 6 + 15 + 32 + 15 + 0 = 134.
The next integer multiple of 11 is 143 = 11 * 13, so
143 - 134 = 9 - check digit
Full number: ISBN 5-02-013850-9. < In the second method, each digit is multiplied by the number of its position, numbered from left to right, starting from one. The resulting products are then added to and subtracted from that sum by the nearest smaller number, which is divisible by 11.
Example:
ISBN 5-02-013850-?
5 0 2 0 1 3 8 5 0 - Digital part
1 2 3 4 5 6 7 8 9 - item number
5 0 6 0 5 18 56 40 0 - product of numbers for their item number
5 + 0 + 6 + 0 + 5 + 18 + 56 + 40 + 0 = 130,
130 = 11 * 11 + 9 - check digit = 9
Full number: ISBN 5-02-013850-9.
Because 11 is a prime number, so is this scheme calculating a check digit ensures that any single error is detected (for example, if one digit or two digits are damaged) will be rearranged.)
See. also
International Standard Edition Numbers
Links
Official Website of the International ISBN Agency
Ivan Fedorov Book Chamber of Ukraine
Search for book information by its ISBN and vice versa
Manual of ISBNs
n
o
p - International Numbering Standards - Standards

ISO 2108: International Standard Book Number (ISBN)
ISO 3297: International Standard Serial Number (ISSN) - ISO 3901: International Standard Recording Code (ISRC) - ISO 10957: International Standard Music Number (ISMN) - ISO 15511: International Standard Identifier for Libraries ... (ISIL)
ISO 15706: International Standard Audiovisual Number (ISAN)
ISO 15707: International Standard Musical Work Code (ISWC)
ISO 21047: International Standard Text Code (ISTC) - ISO 26324: Digital Object Identifier (DOI)
ISO 27729: International Standard Name Identifier (ISNI)


ISBN

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