Search results

  • Users: Cryxic
  • In Differential Geometry
  • Content: Threads, Posts
  • Order by date
  1. C

    Definition of neighborhood

    You can think of a neighborhood as a collection of open balls, which is equivalent to many other definitions. For example, with regard to the two definitions you gave, a set containing an open set of x can be that open set of x itself. Remember, all sets contain themselves, by definition! In...