Is PR split evenly between all links, whether external or internal?

A paper on PageRank says yes, what do you think?

[QuantumEntanglement]

OK so I was reading a paper explaining how PR is calculated (not the original Sergey/Brin paper) and not "PageRank Explained" either; this article was commenting on a slight misunderstanding he believed existed in that paper.

Anyway, the part that struck me which I wasn't aware of before was that a given URL, with PR of X, will distribute this PR evenly among ALL on-page links... whether they are external or internal. I wanted to ask and confirm with the experts on here, because I guess I had always assumed that for a given URL, there was a pool of Internally-allocatable PR and a pool of Externally-allocatable PR, so whether I had 0, 1, 2, or 3 links to other sites for example, this would not affect the PR being passed back via a breadcrumb let's say to the home page.

But this paper seems to be saying that if I have B, on my site, linking to A, my home page, and I add a link from B -> C (an external site), B is now passing less PR back to A (half in this simple example)

Is this right? Is per-URL PR a total pool from which internal and external links are split evenly?

[theBear]

The system does not make a distinction, it is based on the link graph.

If you have 10 links on a page each link transfers 1/10 of the transferable PR.

[QuantumEntanglement]

Thanks alot Bear.