Local Operation
The connected sum is a local operation on manifolds, meaning that it alters the summands only in a neighborhood of . This implies, for example, that the sum can be carried out on a single manifold containing two disjoint copies of, with the effect of gluing to itself. For example, the connected sum of a two-sphere at two distinct points of the sphere produces the two-torus.
Read more about this topic: Connected Sum
Famous quotes containing the words local and/or operation:
“His farm was “grounds,” and not a farm at all;
His house among the local sheds and shanties
Rose like a factor’s at a trading station.”
—Robert Frost (1874–1963)
“An absolute can only be given in an intuition, while all the rest has to do with analysis. We call intuition here the sympathy by which one is transported into the interior of an object in order to coincide with what there is unique and consequently inexpressible in it. Analysis, on the contrary, is the operation which reduces the object to elements already known.”
—Henri Bergson (1859–1941)