I'd like to use TikZ to typeset some graphs like this one:
(Sorry for the crappy camera-phone pic)
I am familiar with
edge, as well as with getting different arrowhead styles.
The bit that's tripping me up is getting the vertices of the graph to be these little triangular number diagrams. This one is relatively simple (the number diagrams are only 2x2), but I have others where the diagrams are 3x3 and bigger.
Would it be best to use an
array environment inside each
\node? Is that even possible?
Or is there a better way? Thanks!