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A value-added tax identification number or VAT identification number ( VATIN[ 1]) is an identifier used in many countries, including the countries of the European Union, for value-added tax purposes. In the EU, a VAT identification number can be verified online at the EU's official VIES [ 2] website. It confirms that the number is currently ...
Federal Taxpayer Registry. The Federal Taxpayer Registry ( Spanish: Registro Federal de Contribuyentes, RFC ), also known as RFC number, is a tax identification number required by any physical or natural person or moral or juridical person (legal entity) in Mexico to carry out any lawful economic activity for which they are obliged to pay taxes ...
The Specialty Society Relative Value Scale Update Committee or Relative Value Update Committee ( RUC, pronounced "ruck") [1] is a volunteer group of 31 physicians who have made highly influential recommendations on how to value a physician's work when computing health care prices in the United States' public health insurance program Medicare. [2]
The Loughgall ambush took place on 8 May 1987 in the village of Loughgall, County Armagh, Northern Ireland. An eight-man unit of the Provisional Irish Republican Army (IRA) launched an attack on the Royal Ulster Constabulary (RUC) base in the village. An IRA member drove a digger with a bomb in its bucket through the perimeter fence, while the ...
Fundamentals. The algebra of sets is the set-theoretic analogue of the algebra of numbers. Just as arithmetic addition and multiplication are associative and commutative, so are set union and intersection; just as the arithmetic relation "less than or equal" is reflexive, antisymmetric and transitive, so is the set relation of "subset".
The Mandelbrot set ( / ˈmændəlbroʊt, - brɒt /) [ 1][ 2] is a two-dimensional set with a relatively simple definition that exhibits great complexity, especially as it is magnified. It is popular for its aesthetic appeal and fractal structures. The set is defined in the complex plane as the complex numbers for which the function does not ...
A block code can also be described as a family of sets, by describing each codeword as the set of positions at which it contains a 1. A topological space consists of a pair. ( X , τ ) {\displaystyle (X,\tau )} where. X {\displaystyle X} is a set (whose elements are called points) and. τ {\displaystyle \tau } is a topology on.
A set class in music theory is a collection of pitch classes. For a list of ordered collections, see: list of tone rows and series . Sets are listed next to their complements. The prime form of unsymmetrical sets is marked "A". Inversions are marked "B" (sets not marked "A" or "B" are symmetrical ). "T" and "E" are conventionally used in sets ...