On Mon, Aug 24, 2009 at 1:15 PM, David Gerard <dgerard(a)gmail.com> wrote:
Not me, the guy who did the website :-) It did occur
to me to wonder
if he'd just reinvented PageRank from first mathematical principles
...
I'm pretty sure the mathematics of PageRank are pretty well known. My
linear algebra textbook (Lax's "Linear Algebra and Its Applications")
has a whole chapter on matrices with positive entries -- [[Perron's
Theorem]], principal eigenvectors and so on, exactly what these guys
are talking about. The chapter even has a sentence somewhere in there
along the lines of "This is the principle underlying Google's search
algorithm."