Facing
Definition
A facing is an interface orientation made available by a structural basin to an external open half-fold.
In LMR, facings are interface conditions, not intrinsic proton states, rotations, phases, or motions.
Facing language belongs to the grammar of admissible seating and interface compatibility.
Tier Placement
Primary tier: Tier 1
Role: Interface admissibility term
Facing belongs to the structural classification layer established in Paper III.
Source
Primary source: Paper III — Emergence and Structure
Authority level: Foundational structural classification
Paper III establishes facing structure in connection with basin geometry, interface multiplicity, and admissible seating.
Function in LMR
Facing functions as an interface condition.
It supports:
- proton-class basin interface grammar
- admissible seating
- hydrogen-class structure
- facing-schedule selection
- distinction between intrinsic basin and external interface
- measurement and admissibility-resolution branches
A facing is what an external open half-fold may engage. It is not an internal motion of the basin.
Allowed Use
Facing may be used when discussing interface compatibility, proton-class basin presentation, hydrogen-class seating, and admissibility resolution.
It may be used in measurement-related working notes when the connection to interface admissibility is explicit.
Prohibited Misuse
Facing must not be treated as:
- a proton internal state
- a rotating orientation
- a temporal phase
- a dynamical cycle
- a hidden spin variable
- a field orientation
- an ordinary spatial face of a particle
Facings are interface admissibility conditions.