covering

Covering may refer to:

• In topology:
  • Covering map, a function from one space to another with uniform local neighborhoods
  • Cover (topology), a system of (usually, open or closed) sets whose union is a given topological space
  • Lebesgue covering dimension, a definition of dimension using topological properties
• In graph theory:
  • Vertex cover – a set of vertices incident on every edge
  • Edge cover – a set of edges incident on every vertex
  • Covering graph – a graph related to another graph via a covering map
  • cycle double cover, a family of cycles that includes every edge exactly twice
  • clique cover, a family of cliques that includes every vertex
  • path cover, a family of paths that includes every vertex
  • biclique cover, a family of complete bipartite graphs that includes every edge
• Covering code, where every word is close to some codeword
• Covering lemma in set theory (specifically large cardinal theory)
• Covering number of a metric space, the minimum number of smaller balls needed to cover a unit ball
• Covering problems, computational tasks of finding a small family of sets whose union is a given set
• Covering set, in number theory, a set of prime numbers dividing all the elements of a sequence of numbers

En la disciplina matemática de la teoría de grafos, una cobertura de vértices (en inglés, vertex cover) o simplemente cobertura de un grafo, es un conjunto de vértices tales que cada arista del grafo es incidente a al menos un vértice del conjunto.

Le total covering, mot anglais largement adopté par la communauté du tuning automobile, est une spécialité de préparation automobile visant à appliquer un film de décoration ou de protection sur l'ensemble du véhicule (bateau, camion, bus, voiture, moto) notamment sur l'ensemble de la carrosserie et des vitrages. Cette technique est généralement utilisée dans le cadre du tuning auto, mais aussi dans le monde professionnel lors de campagnes marketing événementielles ou lors de communication permanente afin de diffuser une publicité ou un message.