3. The apparatus of claim 2 , wherein: the third expression includes an indication that the first and second subproblems are able to be solved independently of each other; and the subproblem component is to detect the indication that the first and second subproblems are able to be solved independently of each other, and generate the fourth expression to cause the execution control component to derive the solutions to the first and second subproblems at least partially in parallel in response to detecting the indication.
4. The apparatus of claim 3 , comprising a parallel execution component for execution by the processor component to coordinate at least partially parallel derivations of the solutions to the first and second subproblems.