A lazy array notation that is a array notation copying off other array notatios.
{a} = a {a,b} = \(a\rightarrow b\)
{a,...,x} = \(a \rightarrow \cdots \rightarrow b\)
That's all folks!
Actually goodish array notation (maybe?)[]
https://penguin-number-123.github.io/NotationsFunctions/EXAT.html
So, @ notation was ill defined due to ambuiguity, and the reason for that is I don't know how to mathjax, so here is a updated version, the EXtended @ Notation, or EXAT for short. There is an array notation coupled with it, I really want to make a multidimentional array, but it needs ellipses, and oh well. If enough people convince me to do it I will make the multidimensional arrays.