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# What is contravariant and covariant in tensor?

## What is contravariant and covariant in tensor?

In differential geometry, the components of a vector relative to a basis of the tangent bundle are covariant if they change with the same linear transformation as a change of basis. They are contravariant if they change by the inverse transformation.

### Why metric tensor is covariant?

Thus the metric tensor gives the infinitesimal distance on the manifold. The components of a metric tensor in a coordinate basis take on the form of a symmetric matrix whose entries transform covariantly under changes to the coordinate system. Thus a metric tensor is a covariant symmetric tensor.

What is contravariant metric tensor?

The contravariant metric tensor is defined as. (1.18) g ik = G ik / g , where Gik is the algebraic adjunct to the element gik, and g is the determinant consisting of the elements gik.

What is the meaning of Contravariant?

Contravariant meaning Filters. (category theory, of a funct) Which reverses composition. adjective. (computing, programming) Using or relating to contravariance.

## What is the meaning of covariance and Contravariance?

Covariance and contravariance are terms that refer to the ability to use a more derived type (more specific) or a less derived type (less specific) than originally specified. Generic type parameters support covariance and contravariance to provide greater flexibility in assigning and using generic types.

### Is the covariant derivative a tensor?

So let’s agree that a covariant derivative would be a good thing to have, and go about setting it up. ‘s exactly cancel. This is why we are not so careful about index placement on the connection coefficients; they are not a tensor, and therefore you should try not to raise and lower their indices.

What does covariant mean in physics?

n. The principle that the laws of physics have the same form regardless of the system of coordinates in which they are expressed.