Elamur Groupantsmath-plan-gate-execution
The groupant beside math/src/plan.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
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 |
| Ast | partial | ../syntax.json |
| Composition | partial | Composition |
| Descriptant | present | Descriptant |
| Invariant | partial | Invariant |
| Tests | partial bounded evidence | 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.
| relation | type | label | where |
|---|---|---|---|
| Behavior complement | behavior complement | partial source derived model | Behavior complement |
| Reverse reconstruction | reverse reconstruction | partial source derived model | Reverse reconstruction |
| Failure precedence | failure precedence | partial source derived model | Failure precedence |
| Representation transport | representation transport | partial source derived model | Representation transport |
| Resource boundary | resource boundary | partial source derived model | Resource boundary |
| Domain boundary | domain boundary | partial source derived model | Domain boundary |
Model text
Descriptant
Source-bound description
Sequentially exec_step, merge subchecks, bind nonunderscore values; errors stop execution while false checks accumulate and suppress final answer. Answer may be present while gate fails.
Approximant
Forward relation
Sequentially exec_step, merge subchecks, bind nonunderscore values; errors stop execution while false checks accumulate and suppress final answer. Answer may be present while gate fails.
Domain: Plan steps, Expect and Limits; panic wrapper outside this scope.
Executable Rust approximant unsupported: categorical/effect observations have no useful percentage metric yet. Future caps1/2/5/10% only; no automatic substitution.
Invariant
Invariant and cost
Failure excludes verified, not necessarily answer Some; underscores exclude environment binding.
Ordering: exec→subs→checks→binding→trace; answer only on no failures.
Cost: O(steps+subtrace/check bytes) plus exec_step/eval costs; elapsed measured but hard time enforcement delegated.
Composition
Composition and epoch memory
exec_step mutates Env; gate_answer writes checks/fails; Trace::verified consumes accumulated state.
Source scope bytes[4173,7173). Finite checks not proof; no meaningful percentage surrogate for categorical gate. Not every branch in this fragment executed.
Partial syntax and finite tests do not establish all caller assumptions.
Models
Behavior complement
Failure excludes verified, not necessarily answer Some; underscores exclude environment binding.
Reverse reconstruction
A trace prefix admits all remaining unexecuted suffixes after first execution error; final answer absent admits check failure or expression failure, not unique plan.
Failure precedence
exec→subs→checks→binding→trace; answer only on no failures.
Representation transport
exec_step mutates Env; gate_answer writes checks/fails; Trace::verified consumes accumulated state.
Resource boundary
O(steps+subtrace/check bytes) plus exec_step/eval costs; elapsed measured but hard time enforcement delegated.
Domain boundary
Plan steps, Expect and Limits; panic wrapper outside this scope.
Tests
Evidence
Selected actual-source checks: cargo test -p math --lib plan::tests. Exact commands, numeric statuses, normalized outcomes, compiled assertion controls and restoration receipts are in the external wave28 mathcontrol run.
Source scope bytes[4173,7173). Finite checks not proof; no meaningful percentage surrogate for categorical gate. Not every branch in this fragment executed.
No live teacher/API, trained model, corpus/held-out, GPU, DB or expensive benchmark run. Parent syntax generated twice identically. Scope remains partial.
History
2026-10-31 · descriptant
Epoch 2026-10-31: prospective model before bounded synthetic tests; production behavior unchanged. Source scope bytes[4173,7173). Finite checks not proof; no meaningful percentage surrogate for categorical gate. Not every branch in this fragment executed.
2026-10-31 · tests
Heading ### Evidence, 2026-10-31 stays in tests as ### Evidence.
Provenance
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/math/src/plan.rs.groupant/execution.groupant/