Products

  • In math, at the level of calculus and higher, how many products are there?
  • How many products do we need?

Dot Product

You can use a dot product to take two vectors and return scalar. More precisely, this calculation takes the transpose of the first vector.

As an example, if one vector represents a displacement and the other vector represents the force that caused it, the dot product of these two vectors gives us a scalar which is the amount of work done.

Cross Product

The cross product of two vectors is the area of the parallelogram that they create.

Scalar Product

Scalar Product is closely related to or perfectly equivalent to Dot Product.

Vector Product

The Cross Product is sometimes called a Vector Product.

Inner Product

An Inner Product is the generalization of the Dot Product.

Outer Product

The Outer product of two tensors is a tensor.

As an example, the outer product of two coordinate vectors is a mate.

Tensor Product

Math3ma has a page about tensor products. We love it!

https://www.math3ma.com/blog/the-tensor-product-demystified

Direct Product

The Direct Product of known objects produces a new object.

Cartesian Product