Donald Knuth's CC-systems generalize points on the plane. (Their axioms are listed in Wikipedia.)

Are there any simple criteria for testing whether a CC-system is realizable as points on the plane?

Is there any reason there shouldn't be a finite set of forbidden substructures which obstruct realizability?


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.