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

The groupant beside world/src/school.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/school.rs`](https://github.com/ElamurAI/mova-free/blob/main/world/src/school.rs)
- **source SHA-256:** `06aaec6f562c2acc…`
- **covers:** Decode vote duplicates in i128, clamp each final merged total once to i64. effect sums each marginal in i128, omits NONE=9, selects greatest vote then smallest signed effect; missing receiver defaults zero, missing subject yields None. Supplied Reading play initializes holdings and executes events in order, fractions from previous subject balance minus keep. answer_of chooses its first matching schema; focus filters by thing. (bytes 41423–73552)
- **part of:** [world-school](https://md.groupants.elamur.ai/free/en/mova/world/src/school.rs.groupant/)
- **repository folder:** [`world/src/school.rs.groupant/actors-world.groupant`](https://github.com/ElamurAI/mova-free/tree/main/world/src/school.rs.groupant/actors-world.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 | [wave34-composition](#wave34-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-school-actors-world-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `world-school-actors-world-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |
| `world-school-actors-world-coupling` | constraint_relation | partial source model | [coupling](#coupling) |
| `world-school-actors-world-observation-fiber` | information_loss | partial source model | [observation-fiber](#observation-fiber) |

## Parts

- [world-school-actors-world-marginal-election](https://md.groupants.elamur.ai/free/en/mova/world/src/school.rs.groupant/actors-world.groupant/marginal-election.groupant/)
- [world-school-actors-world-event-play](https://md.groupants.elamur.ai/free/en/mova/world/src/school.rs.groupant/actors-world.groupant/event-play.groupant/)
- [world-school-actors-world-answer-priority](https://md.groupants.elamur.ai/free/en/mova/world/src/school.rs.groupant/actors-world.groupant/answer-priority.groupant/)

## Model text


### model

## world-school-actors-world

### forward

Decode vote duplicates in i128, clamp each final merged total once to i64. effect sums each marginal in i128, omits NONE=9, selects greatest vote then smallest signed effect; missing receiver defaults zero, missing subject yields None. Supplied Reading play initializes holdings and executes events in order, fractions from previous subject balance minus keep. answer_of chooses its first matching schema; focus filters by thing.

### invariant

Duplicate order cannot change a representable total; saturation happens only after summation. Independent marginals may select a pair never voted jointly. play/answer require nonzero fraction denominators and representable arithmetic. Reader globals/dictionary/fallback are external.

### cost

Decode O(R log V log E), O(VE) storage; marginal election O(E log E). play O((H+J)log A+JH) due to fallback-holder scans; answer up to O(J+A). Parsing/guessing opaque.

### composition

Actual load/save use codecs. Tests cover duplicate saturation/cancellation, sentinel partial evidence, wide marginals and stable ties. Supplied play transfers three then all-but-two, preserving total twelve and answering Anna ten. actor_answer/reading_of/from_dictionary/school_tree are unexecuted.

### epoch-memory

2026-10-30 initial school source-bound epoch. Prospective model: keep O(1) arithmetic/partition cost, widen aggregation scalars, and expose actual codecs without filesystem effects. Old native witnesses found unchecked operation, score, marginal vote, partition and duplicate-vote arithmetic; legacy serialization synthesized zero accumulators. Review found that dropping explicit zero accumulators also changed the prediction table. Both activation directions now have named tests. No speedup, approximate-error profile or general semantic proof is claimed. Unchecked update/world arithmetic retains representability premises.

### checks

cargo test -p world --lib school::wave12_models -- --test-threads=1. Root evidence.md binds exact source/evidence hashes, repeated debug/release outcomes and a compiled production mutation. Named fixture domains appear in composition. Syntax is a source-bound partial projection; macros remain opaque. No semantic AST or live school execution.

### behavior-complement

Subject/revision: manifest hash and byte scope. Universe: supplied finite inputs, fixed dependencies, successful allocation and the explicit arithmetic premises of this scope. Inner absent-behavior relation: Receiver-only sentinel votes cannot establish a subject; absent verbs cannot yield effects. Intermediate i64 overflow cannot corrupt a representable decoded total. Wrong marginal tie ordering is excluded; whole-world arithmetic totality is not claimed. These are source-derived constraints with finite named witnesses where indicated; external behavior remains unknown.

### reverse-reconstruction

Subject/revision: manifest hash. Operator: compatible preimage/converse, holding dependencies and admissibility fixed. For an elected pair retain all maps satisfying both marginal winner inequalities; joint occurrence is unnecessary. A saturated count admits all duplicate totals beyond the corresponding bound. Final worlds admit all ordered initial-state/event histories yielding the same counts. Partial relational description, not a complete inverse search or a unique causal history.

### coupling

Subject/revision: manifest hash. Constraint relation on stage identities and ordered intermediate states: Actual load/save use codecs. Tests cover duplicate saturation/cancellation, sentinel partial evidence, wide marginals and stable ties. Supplied play transfers three then all-but-two, preserving total twelve and answering Anna ten. actor_answer/reading_of/from_dictionary/school_tree are unexecuted. Supplied native joins and source inspection are distinct evidence.

### observation-fiber

Subject/revision: manifest hash. Domain: scoped inputs with the declared observation. The information-loss relation equates inputs whose observation agrees: Marginal voting loses correlation. Map serialization is lossless for nonempty inner vote maps with format-safe keys but saturation loses out-of-range totals; identical retained totals need not have identical duplicate input rows. Finite tests do not establish unrestricted completeness.

### wave34-marginal-election

Current nested child world-school-actors-world-marginal-election: For each side c, aggregate T_c(x)=sum votes(e) where e_c=x and x!=9 in i128. Elect the smallest signed x attaining maximal T_c. Missing verb or absent subject evidence yields None; absent receiver evidence defaults to zero.

Parent interaction: Actors codec first merges duplicate joint effects and clamps them; election sees those retained i64 counts, not the original unbounded row totals. play consumes the elected pair; an absent subject can abort play despite receiver evidence.

Earlier checks and epoch observations above remain historical, not new execution receipts. See file-root wave34-evidence.md for current selections.

### wave34-event-play

Current nested child world-school-actors-world-event-play: Fold all initial holdings by actor. For each ordered event obtain (-1,0) for pay, else eff(verb) or return None. Quantity is e.n or (pre-event subject minus keep)*p/q. Update subject first; then explicit receiver, else first original holder different from subject if subject was not an original holder. Return the signed map without pruning.

Parent interaction: Parent calls play before answer_of. Fractions inspect state after prior events but before this event; fallback receiver consults original holds, not the updated map. eff is supplied in native tests; dictionary/parser calls are omitted.

Earlier checks and epoch observations above remain historical, not new execution receipts. See file-root wave34-evidence.md for current selections.

### wave34-answer-priority

Current nested child world-school-actors-world-answer-priority: Ordered return chain: front+back; front direction; inclusive span; clock wrap; minutes; unknown start/change; full/remainder packing; rate; remaining share; spent; share; last group; named subset; comparisons; named holder plus shift; all; isolated question number; first original holder/event subject. A selected branch may return None and shadows later candidates.

Parent interaction: play must succeed before solve calls answer_of, even for field-only schemas. This node models priority within answer_of separately. Parent focus can filter holdings/events while retaining schema flags, which affects this precedence.

Earlier checks and epoch observations above remain historical, not new execution receipts. See file-root wave34-evidence.md for current selections.

### wave34-composition

#### Wave34 composition

Decode/clamp joint votes first, marginal-election second; event-play obtains an effect for each non-pay event and returns None immediately for absent evidence. Fractions use the preceding map; implicit recipients use original holder ordering. Only after successful play does solve call answer-priority, whose selected None must not fall through. focus and dictionary/reader routes remain source-only. Shared actor/verb identities are essential; independent aggregate scores cannot establish this wiring.

The previous model.md and its composition remain historical epoch memory. Current scoped relations use the manifest source hash; partial syntax and finite helper tests do not prove semantic completeness.