[R] How to read and understand Einops expressions?

Here is my current knowledge of einops:

* einops stands for Einstein-Inspired Notation for operations.
* notation was loosely inspired by Einstein summation (in particular by numpy.einsum operation).
* h = height, w = width, c = channel (color), b = batch
* left side is input shape. Left side is output shape.
* letters in parenthesis are multiplied together.
* einops.rearrange includes functionality of transpose (axes permutation), reshape (view), squeeze, unsqueeze, stack, concatenate and other operations.

What I don’t …

color current einstein knowledge machinelearning notation numpy operations