Looking for a verb that means division into multiple branches

Question

I am looking for a verb that describes division into multiple branches. The context is an academic report that describes a graph that contains four curves over the range of -3 to 3. Over half the range all curves are identical, but starting from 0, each curves follow a different trend.
I know that bifurcation describes a similar situation with two curves.

Edwin Ashworth · Accepted Answer

There's the simple intransitive multi-word verb fan out.

The graphs fanned out beyond x = 1·6

fan out (from some place)
to spread outward from a particular area.

The paths seem to fan out from the wide trail that starts at the house.

[McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002]
Diverge is perhaps a little more formal, but does not really generate the same image.
A few have felt the need to introduce 'polyfurcate', but thankfully dictionaries have ignored this.

cigien · Answer

One option would be the word fork

a division into branches or the place where something divides into branches

This can also be used as a verb, so you could say

Over half the range all curves are identical, but starting from 0, each curve forks.

Looking for a verb that means division into multiple branches

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