# C937 — Reduce the junction to two compatibility equations

## Question

Which equations remain after placement and coefficient bookkeeping are removed?

## Inputs

```json
{}
```

## Sources

```json
[
  "C934–936"
]
```

## Opened utc

2026-09-28T03:37:25.230891+00:00

## Results

```json
{
  "reduced_constraints": {
    "path": "model/junction_reduced_constraints.json",
    "sha256": "c54a809385ab05bc7b681abdec7a2251e0b0b24e6392203096838a7fd56d560d",
    "bytes": 318
  },
  "u_v_weighted": [
    10620,
    10620,
    10620
  ]
}
```

## Finding

The selected junction is captured by two statements: the component evaluations agree, and that common duration equals(4C+R)/5. Absolute12026 is then placement;14726 is continuation. The next task is whether the digit-register structure already forces either statement.

## Reassessment

Derive aggregate-digit evaluation for the four original component spans.

## Checks

```json
{
  "two_equalities": true,
  "originals_only": true
}
```

## Closed utc

2026-09-28T03:37:25.231292+00:00

## Record provenance

Exact record hash: `534a278feede5f111f365d99b38952ee1365d76ca092c621af1fb1b88a99b293`

Source journal: `Research_Cycles/C0932_C1131/journal.json`