12D05  Polynomials: factorization


12D10  Polynomials: location of zeros (algebraic theorems) {For the analytic theory, see 26C10, 30C15}


12D15  Fields related with sums of squares (formally real fields, Pythagorean fields, etc.) [See also 11Exx]


12D99  None of the above, but in this section

