# C1053 — Shared Levi life forces the adjacent join

## Question

Does the Levi-birth landing add another condition after the clutch is derived?

## Inputs

```json
{}
```

## Sources

```json
[
  "C1052",
  "File62 §2.4"
]
```

## Opened utc

2026-09-28T04:07:18.122055+00:00

## Results

```json
{
  "coefficient_residual": [
    [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  ],
  "Levi_birth_landing": 1919,
  "reason": "Both cumulative and regular paths use the same Levi lifespan."
}
```

## Finding

The second landing is an identity after the first join and shared Levi lifespan are retained. It contributes no additional source equation.

## Reassessment

Test the next Jacob-to-Isaac landing in the same symbolic source model.

## Checks

```json
{
  "universal_identity": true,
  "source_landing": true
}
```

## Closed utc

2026-09-28T04:07:18.125553+00:00

## Record provenance

Exact record hash: `f6d9e187682ddc456d213ec9b34c93a7150cb1a9b7fbdec98e9e5b5f3b93333f`

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