Japanese crossword «Jenner Edward»

Wow... this was something else to solve. Very unique. I realized early on it was some sort of code, then I realized when I saw the man on the side that it was math. A very creative way to either avoid doing math homework, or express frustration about the homework. Then finally when I was done solving, the title. To be honest, I don't know who he is, but I guess he must be a famous mathematician? Anyhow, when I was still thinking this was homework, it reminded me of a joke, a mathematical word problem: If Sally has 5 apples, and Joey rides a bike, how many pancakes will fit on the roof? The answer is Purple, because aliens don't wear sweaters.