Generalized finger trees

2018-07-19 22:24:40

While all explanations and implementations of finger trees I can find use 2-3 trees, in my understanding there is no impediment to generalize them to use B-trees instead.

For 2-3 trees branch factor of the spine is 4. Is it related with the 3 of 2-3 tree? On a B-tree with a maximum branch factor of $2N-1$, will the branch factor of the spine be $2N$?