MATH.Preface:3.4 - Return a construction to further work

The connecting rule is simple: name what one construction returns and what the next one uses. A set of solutions, one chosen solution, a proof of existence and an executable selection support different continuations. Enter at a contribution already available and stop when the requested mathematical result has been supplied.

For a question about another subject, use FPF C.29 to establish the correspondence through which the mathematical result answers that question. C.29.2 develops a missing computational formulation; C.29.3 connects a computation with the arrangement that prepares its inputs, performs it and exposes an interpretable result. B.5.MPC coordinates mathematical, physical and computational reasoning when their contributions must be developed together.