Mathematics
- Cover (topology), the mathematical concept of a collection of subsets of a set whose union is the whole set
- Cover (algebra), the concept of an algebraic structure that maps onto another structure in structure-preserving fashion
- A pair in the covering relation of a partially ordered set, or the greater element in such a pair
- A covering space, in the theory of Riemann surfaces and topology
- A (universal / double) covering group, a covering space with group structure, common in theoretical physics
- Cover, an equivalent set of constraints in database theory
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Famous quotes containing the word mathematics:
“The three main medieval points of view regarding universals are designated by historians as realism, conceptualism, and nominalism. Essentially these same three doctrines reappear in twentieth-century surveys of the philosophy of mathematics under the new names logicism, intuitionism, and formalism.”
—Willard Van Orman Quine (b. 1908)
“Why does man freeze to death trying to reach the North Pole? Why does man drive himself to suffer the steam and heat of the Amazon? Why does he stagger his mind with the mathematics of the sky? Once the question mark has arisen in the human brain the answer must be found, if it takes a hundred years. A thousand years.”
—Walter Reisch (1903–1963)