This paper fixes boundary as the non-constitution of applicability within a non-modal structural system. Boundary is not introduced as a limit, separation, or external condition. It is not defined as absence, interruption, or failure of relation. Instead, boundary designates the condition under which applicability is not constituted. Applicability is not assumed as given. It is not extended, transferred, or preserved across configurations. Where applicability is not constituted, no operation, selection, or determination is defined. Boundary does not mark the edge of a domain. It fixes the non-applicability of any domain. No subject is introduced. No interpretation is introduced. No transition is assumed. This paper fixes boundary as the structural condition under which applicability does not hold.
Juza Minamikata (Fri,) studied this question.