Homology
Topic history | v1 (current) | created by jjones
Details
Homology
see v1 | created by jjones | Add resource "Computing homology groups | Algebraic Topology | NJ Wildberger"
- Title
- Homology
- Description
- In mathematics, homology is a general way of associating a sequence of algebraic objects, such as abelian groups or modules, to other mathematical objects such as topological spaces. Homology groups were originally defined in algebraic topology. Similar constructions are available in a wide variety of other contexts, such as abstract algebra, groups, Lie algebras, Galois theory, and algebraic geometry. The original motivation for defining homology groups was the observation that two shapes can be distinguished by examining their holes. For instance, a circle is not a disk because the circle has a hole through it while the disk is solid, and the ordinary sphere is not a circle because the sphere encloses a two-dimensional hole while the circle encloses a one-dimensional hole. However, because a hole is "not there", it is not immediately obvious how to define a hole or how to distinguish different kinds of holes.
- Link
- https://en.wikipedia.org/?curid=142432
resources
treated in Homology Theory — A Primer
authors
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