Monday, August 21, 2017

Invariant

 Invariant is a property, held by a class of mathematical objects, which remains unchanged when transformation.

Transformation: is a function who maps to itself, in Euclidean geometry, move every point in the same direction or a constant vector for every point as shifting the origin of the coordinate system. The syetem can be rotate (sniping)

Tuesday, July 25, 2017

Topology



  • A definition for General Topology is Geometry of Sets, and the 1 to 1 and onto. A detail properties must be continuous (one to one correspondence),  Compact, connected (onto)

  • Algebraic Topology considers homology (one to one correspondence) a manifold is not a Circle. Homotopy record their properties can be consider onto.

  •  Differential Topology considers the Geometry of the Manifolds

  •  Geometric Topology considers manifolds and maps (one to one correspondence)  between them, particularly embeddings of one manifold into another.