Questions involving how to express something following the DCP rules usually fall into one of three types:
- They are solved.
- They are rejected (marked as nonconvex).
- They are open questions (possibly worthy of academic research).
The latter type has come to be known as @Erling’s challenge and has been mentioned several times, latest in How can I minimize the function in the form of 1/(x^3-1), with x>1?. Would it be sensible to create a CVX category and mark questions of the latter type so they can be found more easily, and so that users can subscribe to notifications from this category?