Decimal Day — An introductory pack of the new currency. Decimal Day (15 February 1971) was the day the United Kingdom and Ireland decimalised their currencies. Contents 1 … Wikipedia
Decimal separator — In a positional numeral system, the decimal separator is a symbol used to mark the boundary between the integral and the fractional parts of a decimal numeral. When used in context of Arabic numerals, terms implying the symbol used are decimal… … Wikipedia
Area of a disk — Part of a series of articles on the mathematical constant π … Wikipedia
Decimal (unit) — A decimal (also spelled decimel) is a unit of area in India and Bangladesh approximately equal to 1/100 acre (40.46 m²). After metrication in the mid 20th century by both countries, the unit became officially obsolete. Especially among the… … Wikipedia
Développement décimal de l'unité — En mathématiques, le développement décimal périodique qui s écrit , que l on dénote encore par , ou , représente un nombre réel dont on peut montrer que c e … Wikipédia en Français
Dewey Decimal Classification — For the similar sounding base 12 numeral system, see Duodecimal. Dewey Decimal Classification, (also called the Dewey Decimal System) is a proprietary system of library classification developed by Melvil Dewey in 1876.[1] It has been greatly… … Wikipedia
Dewey decimal classification — Trademark. a system of classifying books and other works into ten main classes of knowledge with further subdivision in these classes by use of the numbers of a decimal system: devised by Melvil Dewey, published in 1876, and used in many… … Universalium
Universal Decimal Classification — The Universal Decimal Classification is a system of library classification developed by the Belgian bibliographers Paul Otlet and Henri la Fontaine at the end of the 19th century. It is based on the Dewey Decimal Classification, but uses… … Wikipedia
Natural Area Code — The Natural Area Code (or Universal Address) is a proprietary geocode system for identifying an area anywhere on the Earth, or a volume of space anywhere around the Earth. The use of thirty alphanumeric characters instead of only ten digits makes … Wikipedia
List of Dewey Decimal classes — The Dewey Decimal Classification is a system of library classification made up of ten classes, each divided into ten divisions, each having ten sections (although there are only 99 of 100 divisions and 908 of 999 sections in total, as some are no … Wikipedia