I was not sure what exactly to search to find more information on this, but I'm totally lost when it comes to this notation:
with the right facing arrow. Copying the text just refers to the symbol as "function". I've seen this come up on lots of differential equation solutions (I was solving y''=-sgn(y') for this one) but I can't seem to figure out what it actually means. Is anyone able to provide a little insight into this? Thanks!
