E.17.0:1 - Problem frame

An engineer may have several claim-bearing epistemes about one system, method, structure, work occurrence, or another exact entity. A functional description, safety description, maintenance description, and allocation description may serve different concerns. One episteme may also be constructed from another by a query or projection, rendered in several forms, published several times, or compared with another view.

Those uses involve different objects and relations:

1. the exact EntityOfConcern of each episteme;
2. the episteme itself, identified under C.2.1;
3. an exact U.Viewpoint episteme carrying fixed concerns and conformance rules;
4. an obtaining EpistemeViewpointConformanceRelation occurrence;
5. dependent U.View membership of the same episteme individual;
6. an optional A.6.3 viewing relation recording how one episteme was constructed from another;
7. an optional viewpoint selected for one current describing use when it changes what that use reads or checks or may conclude;
8. exact correspondence relations and epistemes that assert or describe them;
9. publication occurrences, forms, carriers, and representations.

The list is an orientation, not a form to fill. Ordinary positive recognition needs items 1 through 5; a negative test stops without an obtaining conformance occurrence or U.View membership. Construction, selection, correspondence, and publication stay outside unless the receiving use calls for them.