Regarding the mathematics in the document.
1. First of all, you can read a lot of the paper without any mathematical knowledge. Simply shut your eyes about mathematics and take what is written as facts with the given assumptions.
My: Assumption. They have not made any mathematical errors.
2. Simple matrix algebra.
3. Elementary statistics, simple probabilities.
You can ask (PM) me if you have problems with understanding a formula.
It is a very important paper, and should be read by anybody who want to understand how the pagerank and trustrank are computed.
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