Elamur Groupantsschool-fact-layers
The groupant beside world/src/knowledge.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.
Facts
Implementation material. A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.
Components
| component | label | where |
|---|---|---|
| approximant | source derived partial | forward |
| ast | partial | ../../syntax.json |
| cost | prospective source cost | cost |
| descriptant | present | epoch-memory |
| invariant | source derived partial | invariant |
| tests | bounded named actual code | checks |
Obernants
The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.
| id | type | label | where |
|---|---|---|---|
school-fact-layers-complement | behavior_complement | source derived inner bound | behavior-complement |
school-fact-layers-preimage | reverse_reconstruction | partial relational specification | reverse-reconstruction |
school-fact-layers-marker-order | ordered_guard | source derived partial | marker-order |
school-fact-layers-cardinality | output_shape | source derived partial | cardinality |
school-fact-layers-citation-bypass | dependency_selection | source derived partial | citation-bypass |
school-fact-layers-preamble-erasure | projection_fiber | source derived partial | preamble-erasure |
Model text
Subject: world/src/knowledge.rs at manifest source SHA. Horizon: one terminating call or explicitly named load prefix on finite synthetic inputs, pinned dependencies and ordinary allocation/I/O. This is a source-derived partial model; finite tests do not establish universal correspondence.
forward
Find the first exact English delimiter and first exact idea delimiter. If both exist and English offset < idea offset, return two trimmed slices; otherwise return a one-element vector from strip_citations. Layer success bypasses citation stripping.
invariant
Result cardinality is exactly two in the ordered-marker branch and one otherwise; the two strings may be empty. Original preamble is erased only in the layered branch.
cost
O(B) delimiter search and copied output, plus citation-scan cost only on fallback; O(B) retained strings.
behavior-complement
Type: behavior_complement. For one-call string/vector transitions, exclude singleton output when both first delimiters appear in the required order, or stripping '(Genesis 1:2)' inside the selected English slice in that branch. Exclude a two-item result on missing/reversed first markers.
reverse-reconstruction
Type: reverse_reconstruction. For observed pair [e,i], compatible strings have arbitrary preamble then the exact English marker then whitespace-wrapped e then the first idea marker and whitespace-wrapped i, subject to first-marker constraints. For singleton [s], candidates must fail ordered-marker selection and map to s under citation scanning.
marker-order
Type: ordered_guard. Both first offsets matter: a prior idea delimiter blocks layered extraction even if a later idea delimiter follows English. Domain and fixed-source assumptions are those above; this is a source-derived constraint, checked only by the bounded named oracle where applicable.
cardinality
Type: output_shape. One versus two items identifies the chosen branch, not whether statements are semantically present; empty slices are legal. Domain and fixed-source assumptions are those above; this is a source-derived constraint, checked only by the bounded named oracle where applicable.
citation-bypass
Type: dependency_selection. Layered text retains citations verbatim after trimming; fallback invokes citation scanning. The two routes cannot be composed as strip-then-split. Domain and fixed-source assumptions are those above; this is a source-derived constraint, checked only by the bounded named oracle where applicable.
preamble-erasure
Type: projection_fiber. Layered outputs do not retain Hebrew or word-for-word preamble; arbitrary compatible preambles yield the same pair without changing teaching facts. Domain and fixed-source assumptions are those above; this is a source-derived constraint, checked only by the bounded named oracle where applicable.
parent-interaction
The field fold extends facts with the returned vector before processing the next line. Ordered markers choose the two-slice route before the citation fallback. Child costs overlap format's helper cost.
checks
knowledge::wave34_tests::layered_fact_projection_has_ordered_marker_precedence directly executes this helper or its containing load/reuse path with literal expected results. Full source and selected test body reviewed; no implementation-copy oracle. Exact names, profile repetitions and mutation receipts are recorded in the wave34 evidence summary. These are finite synthetic witnesses; unobserved cases and opaque dependencies remain gaps.
epoch-memory
2026-10-31 wave34: prospective relations saved before test additions. Production bytes preserved. This new finer scope retains its parent's earlier models and history. Shared partial syntax is generated twice and compared; no semantic AST or solver claimed. No teacher, corpus, model loading, successful examination, training or lesson replay is credited as persistent knowledge.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/world/src/knowledge.rs.groupant/format.groupant/fact-layers.groupant/