mid ₁
Definition
mid₁ is the mirror-inversion center used in the LMR codex grammar.
It defines the structural mapping between complementary representations.
mid₁ is not a physical point, location, boundary surface, mechanism, or causal interface.
Tier Placement
Primary tier: Tier 1
Role: Mirror-inversion grammar
mid₁ belongs to the foundational diagrammatic and dimensional grammar established in Paper I.
Source
Primary source: Paper I — Codex and Foundational Grammar
Authority level: Foundational
Paper I establishes mid₁ as the mirror-inversion relation used in the codex diagrams.
Function in LMR
mid₁ functions as the grammar of mirror correspondence.
It supports:
- A-side / B-side mapping
- reciprocal representation
- quadrant grammar
- hourglass grammar
- side discipline
- admissible inversion
- prevention of physicalized side-transfer readings
mid₁ allows dual descriptions to be related without implying motion, transport, or mechanism.
Allowed Use
mid₁ may be used as a Tier 1 mirror-inversion relation.
It may be used in quadrant and hourglass grammar when reading reciprocal placement or side correspondence.
Prohibited Misuse
mid₁ must not be treated as:
- a physical center
- a spatial midpoint
- a causal boundary
- a transport gate
- a dynamical operation
- a field interface
- an observer location
mid₁ is a grammatical inversion relation, not a place or process.