From Wikipedia, the free encyclopedia
Cover or covers may refer to:
Cover
Covered
Covers
Deception and concealment
Cover (telecommunications) , a communications concealment technique
Cover, something fake used in a
cover-up
Non-official cover , the identity assumed by an operative who takes a covert role in an organization without official ties to the government
Official cover , the identity assumed by an operative who takes a position in an organization with diplomatic ties
Mathematics, science and technology
Cover (algebra) , the concept of an algebraic structure that maps onto another structure in structure-preserving fashion
Cover (topology) , the mathematical concept of a collection of sets whose union contains each set as a subset
Cover, a pair in the
covering relation of a partially ordered set, or the greater element in such a pair
Cover, in database theory, an equivalent set of
constraints
Land cover , physical material on the surface of the earth
Concrete cover , in engineering, distance between reinforcement and the outer surface of element
Sedimentary cover, in geology, overlies a
basement or crystalline basement
Cover (cricket) , a region of the field with respect to the batsman in cricket
To cover, a term in sports betting regarding a game's
point spread
Cover letter , a letter of introduction accompanying another document
Cover, or covers, the top layer of
bedding
Topics referred to by the same term