---
title: "world-qud-tracking — Mova code model"
description: "Mova code model of world/src/qud.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/world/src/qud.rs.groupant/tracking.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-qud-tracking

The groupant beside world/src/qud.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/qud.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/src/qud.rs)
- **source SHA-256:** `68ab6b4d5bfabd85…`
- **covers:** Source scope tracking; see model.md for functions and dependency limits. (bytes 13176–19497)
- **part of:** [world-qud](https://md.groupants.elamur.ai/free/en/mova/world/src/qud.rs.groupant/)
- **repository folder:** [`world/src/qud.rs.groupant/tracking.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/src/qud.rs.groupant/tracking.groupant)
- **repository commit:** `48f2e6f74146`

> **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-qud-tracking-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `world-qud-tracking-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |
| `world-qud-tracking-recency` | constraint_relation | partial source model | [recency](#recency) |
| `world-qud-tracking-givenness` | constraint_relation | partial source model | [givenness](#givenness) |

## Model text


### forward

Push on trimmed trailing question mark; otherwise newest congruent wins, complete removes only it, partial removes nothing. Implicit question uses given before extending it; generic first/next fallback never pushes.

### invariant

Exactly one Step per sentence. Stack is an increasing subsequence of pushed IDs. Partial/implicit leaves stack unchanged; complete removes only selected ID.

### cost

S sentences and Q open questions require up to S Q eligibility calls plus ordered-set updates and explanation construction. Add child eligibility cost and output size; track annotation cost remains external.

### composition

This fragment shares source and state with its siblings; root composition specifies ordering and latent dependencies. It is not an independent replacement API.

### epoch-memory

Predicted latest eligible and partial persistence; 46,656 bounded histories confirm. Generic-hedge prose overstates implementation: Who+maybe is complete. No production repair or continuous approximation metric proposed.

### checks

Five native tests: 46,656 six-step histories (279,936 transitions), uncertainty interaction, empty-content slot gate, four polarity preimages, ordered givenness. Fragment scopes are defined by source byte ranges; root evidence distinguishes executed helper tests from inspection-only branches.

### behavior-complement

Within the scoped input/output universe, violating recency or givenness is excluded by the source model. This inner constraint family does not claim a complete complement.

### reverse-reconstruction

Converse retains all inputs compatible with the scoped output and fixed dependencies; projections and discarded candidates generally create multiple antecedents. No single inverse is claimed.

### recency

Newest partial blocks an older complete candidate; maximum eligible ID is independent oracle on ordered IDs.

### givenness

Filter requested lemmas against given; classify remaining against answer, preserving request order, duplicates and case.