New research from the University of Waterloo is making inroads on one of the biggest problems in theoretical computer science ...

We study solutions of the equation Au = f(x,u) when A is a self-adjoint operator on L2(Ω), Ω ⊂ Rn, having nontrivial null space and f(x,t) is allowed to grow like |t|q, where q is restricted only by ...