# Covering

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**Covering code**— In coding theory, a covering code is an object satisfying a certain mathematical property: A code of length n over Q is an R covering code if for every word of Qn there is a codeword such that their Hamming distance is . Contents 1 Definition 2… …42

**Covering system**— In mathematics, a covering system (also called a complete residue system) is a collection of finitely many residue classes whose union covers all the integers. Unsolved problems in mathematics For any arbitrarily large natural number N does there …43

**Covering groups of the alternating and symmetric groups**— In the mathematical area of group theory, the covering groups of the alternating and symmetric groups are groups that are used to understand the projective representations of the alternating and symmetric groups. The covering groups were… …44

**Covering of the Senne**— Construction of the covering and tunnels. The covering of the Senne (French: voûtement de la Senne, Dutch: overwelving van de Zenne) was one of the defining events in the history of Brussels. The Senne/Zenne (French/Dutch) was historically the m …45

**Covering problem**— In combinatorics and computer science, covering problems are computational problems that ask whether a certain combinatorial structure covers another, or how large the structure has to be to do that. Covering problems are minimization problems… …46

**Covering lemma**— See also: Jensen s covering theorem In mathematics, under various anti large cardinal assumptions, one can prove the existence of the canonical inner model, called the Core Model, that is, in a sense, maximal and approximates the structure of V.… …47

**Covering of the eyes**— The phrase covering of eyes is found in Genesis 20:16. It is translated literally in Young s Literal Translation. The King James Version inserts the definite article the , absent in the original text. Almost all other versions treat it as a… …48

**Covering relation**— For other uses of Cover in mathematics, see Cover (mathematics). The Hasse diagram of the power set of three elements, partially ordered by inclusion. In mathematics, especially order theory, the covering relation of a partially ordered set is… …49

**Covering problem of Rado**— The covering problem of Rado is an unsolved problem in geometry concerning covering planar sets by squares. It was formulated in 1928 by Tibor Radó and has been generalized to more general shapes and higher dimensions by Richard Rado. Formulation …50

**Covering party**— Cover Cov er (k?v ?r), v. t. [imp. & p. p. {Covered} ( ?rd); p. pr. & vb. n. {Covering}.] [OF. covrir, F. couvrir, fr. L. cooperire; co + operire to cover; probably fr. ob towards, over + the root appearing in aperire to open. Cf. {Aperient},… …