Typos in Chapter 3

[kmartinet]

As I was reading Chapter 3 (in the PDF version of the book), I noticed a couple small typos that I wanted to mention!

On page 47 right after equation 3.6, it says "Thie equation states..."

On page 57 in the first paragraph of section 3.7, there is an extraneous "is" in the sentence "For example, traits will follow Brownian motion under selection is if the strength and direction of selection varies randomly through time."

Maybe this isn't a typo, but I wanted to mention it just in case, on page 40 in the 4th paragraph, a sentence states that "you can measure a sample of the individuals in a population and estimate the mean average trait value.” In the rest of the example, it is just referred to as the "mean trait value" and not "mean average." Or does this sentence imply that the trait value that we're taking the mean of is an average (basic) trait for the population?

[r03ert0]

in the pdf, in page 48, there's an equation with a reference (#4) added, which looks like just like {N_e}^4. That's not the case of the html version, where the 4 renders in blue.