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

This page as HTML: <https://groupants.elamur.ai/free/en/mova/world/src/spartqa.rs.groupant/reachability.groupant/>

# world-spartqa-reachability

The groupant beside world/src/spartqa.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/spartqa.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/src/spartqa.rs)
- **source SHA-256:** `cea8049e1369f594…`
- **covers:** Scoped inference reachability; surrounding reader behavior remains a gap. (bytes 49279–51879)
- **part of:** [world-spartqa](https://md.groupants.elamur.ai/free/en/mova/world/src/spartqa.rs.groupant/)
- **repository folder:** [`world/src/spartqa.rs.groupant/reachability.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/src/spartqa.rs.groupant/reachability.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 | `../model.md` |
| **ast** | partial | `../syntax.json` |
| **composition** | partial source model | `../model.md` |
| **cost** | partial source model | `../model.md` |
| **descriptant** | partial source model | `../model.md` |
| **invariant** | partial source model | `../model.md` |
| **tests** | partial source model | `../model.md` |

## 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-spartqa-reachability-complement` | behavior_complement | partial source model | `../model.md` |
| `world-spartqa-reachability-reverse` | reverse_reconstruction | partial source model | `../model.md` |
| `world-spartqa-reachability-projection` | reverse_reconstruction | partial source model | `../model.md` |
| `world-spartqa-reachability-product` | state_abstraction | partial source model | `../model.md` |

## Model text