# C1541 — CompareNoah-only withFlood+Noah

## Question

Do all three source lowerlegs satisfy the requiredreversal additivity?

## Sources

```json
[]
```

## Opened utc

2026-09-29T02:36:15.969427+00:00

## Results

```json
{
  "MT": {
    "a": 3430,
    "merged_original": 4980,
    "merged_inverse": 8940,
    "split_inverse": 8940,
    "defect": 0
  },
  "LXX": {
    "a": 4340,
    "merged_original": 5890,
    "merged_inverse": 9850,
    "split_inverse": 9850,
    "defect": 0
  },
  "SP": {
    "a": 3310,
    "merged_original": 4860,
    "merged_inverse": 6840,
    "split_inverse": 6840,
    "defect": 0
  }
}
```

## Finding

All three localdefects vanish:8940=3430+5510,9850=4340+5510,6840=1330+5510. ThereforeN andFN agree.

## Reassessment

Identify thedigit condition that explains these particularadditive cases.

## Checks

```json
{}
```

## Closed utc

2026-09-29T02:36:15.969966+00:00

## Record provenance

Exact record hash: `0b7933b2a7821fe73e39d78c2048eede59d3124df269b9b4892834d4cdeb9218`

Source journal: `Research_Cycles/C1483_C1582/c1483_c1582/journal.json`