# C749 — Freeze the three rounding domains

## Question

Which row operations and domains may be compared?

## Inputs

```json
{}
```

## Sources

```json
[
  "File51a §§3.4,16.1–16.2; File18 regular tables"
]
```

## Opened utc

2026-09-28T01:52:29.839395+00:00

## Results

```json
{
  "packet": {
    "path": "model/rounding_inputs.json",
    "sha256": "1c34bdf733d5822070359212b1fc1bedd09747e2ea47ae613a45570546f1aaf4",
    "bytes": 50661
  },
  "row_counts": {
    "MT_native_OFF": 26,
    "LXX_native_ON": 27,
    "SP_native_OFF": 26
  },
  "operations": [
    "Q(b) regular births",
    "Q(b)+Q(r) theoretical regular lifespan",
    "Q(L) cumulative lifespan"
  ],
  "restrictions": [
    "SP inclusive counts retain count type",
    "Jacob b=91 belongs to Joseph collateral",
    "four final b inputs withheld"
  ]
}
```

## Finding

Rounded is three typed row operations, followed by path accumulation. A missing or collateral begetting input cannot become a trunk edge.

## Reassessment

Reconstruct both MT lifespan operators over every admitted row.

## Checks

```json
{
  "counts": true,
  "withheld": true
}
```

## Closed utc

2026-09-28T01:52:29.841524+00:00

## Record provenance

Exact record hash: `c58b31829a73df4b0189eec20ae868a9ff5ae35b45e112d9e252256fc7bf59ca`

Source journal: `Research_Cycles/C0732_C0831/journal.json`