User blog comment:Ubersketch/Section Notation/@comment-36957202-20190329205010/@comment-37246647-20190331090843

Well, evidently you did not. Here's how I would define this in two simple definitions:

1. [n][m]=n+m

2. [X]rn=[X][X][X]...n terms...[X][X][X], where X can be literally anything.

This should be a very simple thing to define, and yet because you failed to include key steps in the process of solving, it became ill-defined. Congratulations, Ubersketch, you just managed the impossible task of one-upping VoidSans in the incompetent-definitions department.