I have many recursion relationships that take several hours to complete. I look for subtle reasons why it takes so long, and I hope to be able to reduce the time for more complicated and larger processes.
My first thought was obviously to do with an unnecessary pattern matching, which I eliminated as much as possible. A seemingly trivial one was dealing with symbols like MMA
y etc, say vs
y3, Is it worthwhile to switch from these argumentative general functions to these indefinite symbols?