## What are homologous elements math?

homology, in mathematics, a basic notion of algebraic topology. Intuitively, two curves in a plane or other two-dimensional surface are homologous if together they bound a region—thereby distinguishing between an inside and an outside.

### Are homology groups Abelian?

The term “homology group” usually means a singular homology group, which is an Abelian group which partially counts the number of holes in a topological space.

#### What is homology in algebraic topology?

Can all manifolds be triangulated?

1 Answer. Show activity on this post. In dimensions up to three, every manifold is triangulable (this is classical). In dimension 4, there are simply connected non-triangulable manifolds (such as the E8 manifold); in fact, a closed 4-manifold is triangulable if and only if it’s smoothable.

How do you triangulate a surface?

There exist essentially two methods. One method divides the 3D region of consideration into cubes and determines the intersections of the surface with the edges of the cubes in order to get polygons on the surface, which thereafter have to be triangulated (cutting cube method).

## What is homology used for math?

### Why is homology so powerful?

My short answer to this question is that homology is powerful because it computes invariants of higher categories. In this article we show how this true by taking a leisurely tour of the connection between category theory and homological algebra.

#### Is homology a topological invariant?

Homotopy invariance This means homology groups are homotopy invariants, and therefore topological invariants.

What is an example of homology?

An example of homologous structures are the limbs of humans, cats, whales, and bats. Regardless of whether it is an arm, leg, flipper or wing, these structures are built upon the same bone structure. Homologies are the result of divergent evolution.

What is homology Modelling used for?

Homology modeling is one of the computational structure prediction methods that are used to determine protein 3D structure from its amino acid sequence. It is considered to be the most accurate of the computational structure prediction methods. It consists of multiple steps that are straightforward and easy to apply.