---
title: "world-story-knowledge — Mova code model"
description: "Mova code model of world/src/story.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/world/src/story.rs.groupant/knowledge.groupant/"
---
Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants**

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# world-story-knowledge

The groupant beside world/src/story.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

- **kind:** groupant_fragment
- **status:** partial source bound model
- **source:** [`world/src/story.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/src/story.rs)
- **source SHA-256:** `40f1d7e9b3e7f56b…`
- **covers:** Text sentence minima are not story chronology. knowledge_minimum_ties_and_narrator_depth checks ties, absent observers and distinct geometric/narrator depths. (bytes 16346–20213)
- **part of:** [world-story](https://md.groupants.elamur.ai/free/en/mova/world/src/story.rs.groupant/)
- **repository folder:** [`world/src/story.rs.groupant/knowledge.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/src/story.rs.groupant/knowledge.groupant)
- **repository commit:** `855da7bd4a7b`

> **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** | partial source model | [forward](#forward) |
| **ast** | partial | `../syntax.json` |
| **composition** | partial source model | [composition](#composition) |
| **cost** | partial source model | [cost](#cost) |
| **descriptant** | partial source model | [epoch-memory](#epoch-memory) |
| **invariant** | partial source model | [invariant](#invariant) |
| **tests** | partial source model | [checks](#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 |
|---|---|---|---|
| `world-story-knowledge-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `world-story-knowledge-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |
| `world-story-knowledge-coupling` | composition_relation | partial source model | [coupling](#coupling) |

## Model text


Partial source-bound model, 2026-10-30. The reference is the exact sibling Rust source. The domain is valid finite typed values reachable through checked World::apply, except explicitly constructed graph/helper fixtures. Public mutable graph/frame fields are not defended against arbitrary corruption. No live parser, teacher, corpus, GPU or persistence is exercised.

### forward

Initialize root; look up metadata; compute narrator changes recursively; known_since scans candidates with strict minimum replacement and stable first tie.

### invariant

Missing metadata is_real is true. Narrator level changes only across unequal observers. Valid parent trees are finite and levels fit u8.

### cost

known_since O(K+R) plus formatting; narr_depth can be O(F squared) on a chain.

### composition

Text sentence minima are not story chronology. knowledge_minimum_ties_and_narrator_depth checks ties, absent observers and distinct geometric/narrator depths.

### checks

Native story::wave9_models tests exercise the bounded domains described in evidence.md at the file root. Ordinary test bodies have partial syntax projections; macro token contents are opaque. The graph oracle uses a dense three-state Floyd closure, not the implementation BFS/bitset algorithm. Typed commands call the real public World::apply boundary.

### epoch-memory

Initial modeling epoch: distinguish admitted graph states from arbitrary public-field edits, and internal mutation from public commit. No production bug was established. In particular narr::relate restores its multi-edge batch, and World::apply discards a cloned failed command even when apply_root has already added a cause edge. Creation ordering has a deliberate 64-round fallback, not an unrestricted topological-sort guarantee. No percentage-error approximant or performance claim.

### behavior-complement

Subject: world-story-knowledge, source-bound revision. Domain and observation: the finite typed state/transition family in forward, with dependencies fixed. Operator: An unknown observer without a matching know/reveal/narration role receives no known_since result. A later candidate cannot replace an earlier one.

Assurance: source-derived partial relation, with finite native evidence where named in checks. Unknown paths remain unknown; no universal coverage or unique inverse is inferred. Complement claims are inner absent-behavior bounds under their stated premises; reverse relations retain all compatible antecedents in their declared family.

### reverse-reconstruction

Subject: world-story-knowledge, source-bound revision. Domain and observation: the finite typed state/transition family in forward, with dependencies fixed. Operator: Given earliest (sentence,explanation), retain all later knowledge/reveal histories plus tie alternatives consistent with first-candidate priority. The output never identifies a unique learning history.

Assurance: source-derived partial relation, with finite native evidence where named in checks. Unknown paths remain unknown; no universal coverage or unique inverse is inferred. Complement claims are inner absent-behavior bounds under their stated premises; reverse relations retain all compatible antecedents in their declared family.

### coupling

Subject: world-story-knowledge, source-bound revision. Domain and observation: the finite typed state/transition family in forward, with dependencies fixed. Operator: Text sentence minima are not story chronology. knowledge_minimum_ties_and_narrator_depth checks ties, absent observers and distinct geometric/narrator depths.

Assurance: source-derived partial relation, with finite native evidence where named in checks. Unknown paths remain unknown; no universal coverage or unique inverse is inferred. Complement claims are inner absent-behavior bounds under their stated premises; reverse relations retain all compatible antecedents in their declared family.