In mathematics, two sets are said to be disjoint sets if they have no element in common. Equivalently, two disjoint sets are sets whose intersection is the empty set. For example, {1, 2, 3} and {4, 5, 6} are disjoint sets, while {1, 2, 3} and {3, 4, 5} are not disjoint. A collection of more than two sets is called disjoint if any two distinct sets of
A Discrete Global Grid (DGG) is a mosaic which covers the entire Earth’s surface. Mathematically it is a space partitioning: it consists of a set of non-empty regions that form a partition of the Earth’s surface. In a usual grid-modeling strategy, to simplify position calculations, each region is represented by a point, abstracting the grid as a set of region-points. Each region or
A de facto standard is a custom or convention that has achieved a dominant position by public acceptance or market forces (for example, by early entrance to the market). De facto is a Latin phrase that means in fact (literally by or from fact) in the sense of “in practice but not necessarily ordained by law” or “in practice or actuality, but not officially established”,
Data integrity is the maintenance of, and the assurance of, data accuracy and consistency over its entire life-cycle and is a critical aspect to the design, implementation, and usage of any system that stores, processes, or retrieves data. The term is broad in scope and may have widely different meanings depending on the specific context – even under
In signal processing, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an
A country is a distinct territorial body or political entity. It may be an independent sovereign state or part of a larger state, as a non-sovereign or formerly sovereign political division, a physical territory with a government, or a geographic region associated with sets of previously independent or differently associated peoples with distinct political characteristics. It is not inherently sovereign. The largest country in the world by geographical area
In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space. The order of the coordinates is significant, and they are sometimes identified by their position in an ordered tuple and sometimes by a letter, as in “the x-coordinate”. The coordinates are taken to be real numbers in elementary mathematics,
The Columbia River drainage basin is the drainage basin of the Columbia River in the Pacific Northwest region of North America. It covers 668,000 km2 or 258,000 sq mi. In common usage, the term often refers to a smaller area, generally the portion of the drainage basin that lies within eastern Washington. Usage of the term “Columbia Basin” in British Columbia generally refers only to the immediate basins of the Columbia and Kootenay Rivers and
Coesfeld is a Kreis (district) in the northwestern part of North Rhine-Westphalia, Germany, west of the city of Münster. Neighboring districts are Steinfurt, district-free Münster, Warendorf, district-free Hamm, Unna, Recklinghausen, Borken. Contents 1History 2Geography 3Coat of arms 4Towns and municipalities 5References 6External links History In medieval times the region was subordinate to the bishopric of Münster. When the area became part of the Prussian province Westphalia in 1816 the new administration created two
Código de Endereçamento Postal (Postal Addressing Code) is the Brazilian postal code system commonly known as CEP. Introduced in 1972 as a sequence of five digits, it was expanded to eight digits in 1992 to allow for more precise localization. The standard format is “nnnnn-nnn” (the original five digits, a hyphen, and the new three digits). Most cities with population