Formal mathematical notation for Partition, Flatten, Tuples?

In other words, how would you write this equation in a formal mathematics format appropriate for a discussion in matrix algebra?

D=Partition[Flatten[Tuples[Reverse[IdentityMatrix[a]],w]],(a*w)]

My days of dealing with formal math notation is behind me. But, this caught my interest.

So, I tried googling: Math Notation *

It looks like they have a notation for everything, but I did not have time to go through all of the details.

Good luck, and have a great weekend.

Mike,
Thank you. I did not expect to find so much on the web. Wikipedia seems to have it all, but it’s going to take hours to reproduce the Mathematica functions. Glossary of mathematical symbols - Wikipedia

Has anyone else gone through this rather tedious exercise?

It would be excellent to have a Wolfram page with all of the Mathematica functions (when possible) in markup languages. I don’t know if that is HTML or internal markup language, LATEX, MathML, MathJax, jsMath package, etc.