My Algebra Questions (continuously updated) Note: Continuously updated because I will post new questions in the thread. I will bold them so you spot them. Ok, this isn't really a problem solving question. It's basically me asking "what is this?" The paragraphs starts as follows... The first mathematicians who studied group-theoretic problems, e.g., Lagrange, were concerned with the question: What happens to the polynomial g(x_1,...,x_n) if one permutes the variables? My question is... What is g(x_1,...,x_n)? How to I write 6x^2 + 4x +1 as g(x_1,...,x_n)? Permuting what variables?