natural object — noun an object occurring naturally; not made by man • Ant: ↑artifact • Hypernyms: ↑whole, ↑unit • Hyponyms: ↑cocoon, ↑body, ↑organic structure, ↑ … Useful english dictionary
Natural regions of Colombia — Because of its natural structure, Colombia can be divided into six very distinct natural regions. These consist of the Andean region, covering the three branches of the Andes mountains found in Colombia; the Caribbean region, covering the area… … Wikipedia
Natural Steps, Arkansas — Natural Steps Census designated place … Wikipedia
Natural Products Association — Type Nonprofit Location Washington, D.C … Wikipedia
Natural Born Kissers — The Simpsons episode Naked Homer and Marge escape the mini golf after getting caught having sex under the windmill. Episode no. 203 … Wikipedia
Natural Standard — Motto The Authority on Integrative Medicine Formation 2000 (2000) Type Research Collaboration … Wikipedia
Covering space — A covering map satisfies the local triviality condition. Intuitively, such maps locally project a stack of pancakes above an open region, U, onto U. In mathematics, more specifically algebraic topology, a covering map is a continuous surjective… … Wikipedia
Covering group — This article is about topological covering group. For algebraic covering group, see universal perfect central extension. In mathematics, a covering group of a topological group H is a covering space G of H such that G is a topological group and… … Wikipedia
Covering set — In mathematics, a covering set for a sequence of integers refers to a set of prime numbers such that every term in the sequence is divisible by at least one member of the set. The term covering set is used only in conjunction with sequences… … Wikipedia
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 … Wikipedia
