Metastate in which shared surfaces are stipulated as enclosed.
Impossible to prove in terms of language (structural convergence).
Implies cohomorphism or internal duality (disymmetry).
Contiguity creates internally closed surfaces. This is called conformalism. Conformalism is built on structural symmetry (structural duality).
It is impossible to prove a bijective (contingent imperative) relationship between contiguity and conformalism using structural convergence (linguistics).