I've never typed Dijkstra in Vim, but if I had to, there are two reasonable options:

1. Wait a half-second after typing the "j". That causes the mapping to time out and you can type the "k" without a problem.

2. Type something like Dijj<del>kstra.

Copy and paste from another window? If your use of the word "Dijkstra" is frequent enough for this method to bother you, there must be other mappings that would work.

I have a similar key binding set up. One option is to press a key that doesn't do anything in between.

I loved his solution until this. This is a deal breaker. Time to go back to the abbacus. ;)