Why Kernels?
Two kinds of divisors: cubes and kernels
- cubes factors are easy to find
- kernel factors are hard, but provide better factoring
- e.g. (a+b)(c+d) = ac + ad + bc + bd
Finding common kernel factors of F and G
- Find all kernel factors of F
- Find all kernel factors of G
- kF ? kG is a common kernel of F and G