# C1456 — Close the cumulative three-manuscript comparison

## Question

Does the LXX–SP reversal of head order follow from the two already explained component relations?

## Sources

```json
[
  "LXX–MT and MT–SP cumulative comparisons"
]
```

## Opened utc

2026-09-29T01:17:04.331691+00:00

## Results

```json
{
  "source_gap": 1500,
  "inverse_gap": -480,
  "source_triangle": 1500,
  "inverse_triangle": -480,
  "extra_contraction": -1980
}
```

## Finding

The LXX–SP cumulative source gap1500 becomes inverse−480 because LXX contracts1980 more. This is the dependent third side of the cumulative comparison.

## Reassessment

Check how the Regular/Cumulative switch interacts with the LXX–SP manuscript change.

## Checks

```json
{
  "triangles_close": true
}
```

## Closed utc

2026-09-29T01:17:04.331947+00:00

## Record provenance

Exact record hash: `4747521f2fa548ef145d2c98807a20abaaeb55dfb948b1c054045673b80def81`

Source journal: `Research_Cycles/C1433_C1482/journal.json`