This type of error (! Package PGF Math Error: Sorry, an internal routine of the floating point unit got an ill-formatted floating point number ...) arises when trying to use a predefined list for the ...
I use TikZ to draw graphics in LaTeX. I'd like to do arithmetic on variables. For example I haves nodes named after N-1 and N-2 and I'd like to create the N-3 and N-4 nodes as +2 from the first nodes. ...