---
title: "rt-mixed-heb — Mova code model"
description: "Mova code model of tools/roundtrip/src/mixed/heb.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/tools/roundtrip/src/mixed/heb.rs.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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# rt-mixed-heb

The groupant beside tools/roundtrip/src/mixed/heb.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
- **status:** partial source bound model
- **source:** [`tools/roundtrip/src/mixed/heb.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/roundtrip/src/mixed/heb.rs)
- **source SHA-256:** `875be40516fae16e…`
- **repository folder:** [`tools/roundtrip/src/mixed/heb.rs.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/roundtrip/src/mixed/heb.rs.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 | [approximant](#approximant) |
| **ast** | partial | `syntax.json` |
| **composition** | partial | [composition](#composition) |
| **cost** | symbolic source derived | [invariant](#invariant) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | [invariant](#invariant) |
| **tests** | executed bounded checks | [tests](#tests) |

## 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 |
|---|---|---|---|
| `behavior_complement` | behavior_complement | partial source derived model | [behavior_complement](#behavior-complement) |
| `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) |
| `nfc_gap_fiber` | nfc_gap_fiber | partial source derived model | [nfc_gap_fiber](#nfc-gap-fiber) |
| `lookup_tie` | lookup_tie | partial source derived model | [lookup_tie](#lookup-tie) |
| `head_transport` | head_transport | partial source derived model | [head_transport](#head-transport) |
| `residual_boundary` | residual_boundary | partial source derived model | [residual_boundary](#residual-boundary) |

## Parts

- [rt-mixed-heb-tokens](https://md.groupants.elamur.ai/free/en/mova/tools/roundtrip/src/mixed/heb.rs.groupant/tokens.groupant/)
- [rt-mixed-heb-lookup](https://md.groupants.elamur.ai/free/en/mova/tools/roundtrip/src/mixed/heb.rs.groupant/lookup.groupant/)
- [rt-mixed-heb-script](https://md.groupants.elamur.ai/free/en/mova/tools/roundtrip/src/mixed/heb.rs.groupant/script.groupant/)

## Model text


### descriptant

#### Descriptant

##### Prospective epoch

2026-10-31 source review predicted: tokens_up/down retain wrap, NFC deviations by whitespace-run ordinal, noncanonical (sentence,token) gaps and tail. Lookup selects maximum count then smallest form with full/tag/lemma backoff. tree_encode/decode retains form overrides, boundary XORs and written overrides. frames_encode aligns consonant lemmas then two head/relation passes; apply remaps one-based heads and patches zero-based Take coordinates. Resource model: NFC/token passes O(B) plus search costs; map lookup O(log L) times key lengths; tree O(W log W); frames align O(W*R*lemma_bytes) time and O(W+R+patch_bytes) space; read repeatedly scans children, at most quadratic; realize quote lookup can be quadratic. External prospective.md predates test additions and preserves APIs, effect order, hazards and interaction hypotheses.

##### Observed epoch

Bounded real helper checks in tests.md constrain these models; syntax is a partial lexical projection with no macro expansion, name resolution or proof. Production expressions unchanged; six inline test modules added. Compiled mutants are temporary and exactly restored. Existing malformed-input and nonfinite domains remain explicit, not silently repaired. Parent composes this scope with siblings without adding overlapping costs twice.

Finite synthetic helper evidence only; live corpora, parser/model loading, full orchestration and filesystem failure races excluded.

### approximant

#### Forward relation

tokens_up/down retain wrap, NFC deviations by whitespace-run ordinal, noncanonical (sentence,token) gaps and tail. Lookup selects maximum count then smallest form with full/tag/lemma backoff. tree_encode/decode retains form overrides, boundary XORs and written overrides. frames_encode aligns consonant lemmas then two head/relation passes; apply remaps one-based heads and patches zero-based Take coordinates.

Domain: Valid UTF-8; words/forms lengths agree; positive group sizes sum to words; heads are zero or in range; generated scripts use unique valid Take indices. Residual metrics are finite nonnegative estimates, not compressed byte lengths.

### invariant

#### Invariant and cost

##### Invariant

Valid UTF-8; words/forms lengths agree; positive group sizes sum to words; heads are zero or in range; generated scripts use unique valid Take indices. Residual metrics are finite nonnegative estimates, not compressed byte lengths.

##### Cost

NFC/token passes O(B) plus search costs; map lookup O(log L) times key lengths; tree O(W log W); frames align O(W*R*lemma_bytes) time and O(W+R+patch_bytes) space; read repeatedly scans children, at most quadratic; realize quote lookup can be quadratic.

##### Limits

Finite synthetic helper evidence only; live corpora, parser/model loading, full orchestration and filesystem failure races excluded. No percentage surrogate is implemented: categorical parsing/effect observations lack an admitted numerical error metric. Any future profile must define its metric/domain and use only1/2/5/10 percent caps.

### composition

#### Local composition

tokens_up/down retain wrap, NFC deviations by whitespace-run ordinal, noncanonical (sentence,token) gaps and tail. Lookup selects maximum count then smallest form with full/tag/lemma backoff. tree_encode/decode retains form overrides, boundary XORs and written overrides. frames_encode aligns consonant lemmas then two head/relation passes; apply remaps one-based heads and patches zero-based Take coordinates.

Children select narrow source functions with their exact byte intervals. Remaining branches stay in the file model; fragments are not exhaustive partitions. Calls and state joins follow the forward relation, not folder order. Shared scans/helpers are counted once in whole-file costs. Complement of composition is not union of complements; reverse composition retains compatible intermediates and caller premises.

### models

## Typed source-bound relations

Subject: exact source SHA-256 in manifest. Domain and resource premises are in invariant.md. Each model is partial, source-derived, over a single helper invocation or the described finite trace. Complements are proposed inner exclusions under those premises; reverse relations retain all compatible antecedents, with no unique inverse claim. The oracle is the named checks in tests.md; unexecuted cases remain hypotheses. No numerical approximation certificate.

### behavior_complement

Without residual, excluded claim: arbitrary original spacing, accents or missing forms are recovered. With generated residual valid domains exclude altered original token/tree bytes.

### reverse_reconstruction

Token output alone admits all wrap/gap/NFC antecedents; (tokens,R1) reconstructs original text. Generated R3 plus fixed realized words recovers target words, but not unique parsed source forms.

### nfc_gap_fiber

R1 raw indices count whitespace chunks, gaps count sentence/token pairs, never byte offsets.

### lookup_tie

Equal frequency normalized forms choose lexicographically smallest; unknown lemma returns None, underscore excluded.

### head_transport

Take.from is zero-based; stored head is one-based or zero; inverse alignment remaps heads before patches.

### residual_boundary

R2 joins toggle canonical adjacency; written override precedes concatenated forms; no residual implies canonical forms.

### tests

#### Checks and evidence

Named source/helper checks: mixed::heb::tests::tokens_come_back, mixed::heb::tests::script_gives_the_tree_back.

Wave32 on2026-10-31:10 distinct exact tests passed twice debug and twice release, with equal sorted named outcomes. This node claims only its listed subset; empty subset means source review only. Five actual source-behavior mutants compiled, failed assertions, restored exact bytes/hash, and passed focused green reruns. No assertion-only mutants; existing swapped-input controls are separate. Receipt bundle: $MOVA_DATA/runs/octopus-wave32-rt_mixed-2026-10-31 (native-commands.json, source-test-map.json, mutation-results.json, *.status/*.log). No live corpus, teacher, frozen assessment, download or production data used.

Finite synthetic helper evidence only; live corpora, parser/model loading, full orchestration and filesystem failure races excluded.