BLOGGER IS WORKING IN UST!

While I was sitting in the middle of a conference given in Russian, I was wondering what would happen if you merged two 2-cfgs together. I'm pretty sure it gets you a 4-cfg. The question is whether or not it gets you a set of superimposable ones... and I think I need more of my notes before I determine that. I forget the proof... that is what I'll have to look up. Who knows! Maybe I'll figure out what I couldn't finish!