# C1446 — Test SP_regular at Noah and Flood

## Question

Do the two named coarse partitions and the path retaining both source nodes have the same inverse head?

## Sources

```json
[
  "Registered SP_regular source",
  "Named600 hinge source review"
]
```

## Opened utc

2026-09-29T01:14:19.272385+00:00

## Results

```json
{
  "Flood": {
    "source_legs": [
      1700,
      1300
    ],
    "images": [
      7100,
      3100
    ],
    "path2": [
      1406,
      8506,
      11606
    ],
    "path3": [
      6,
      4106,
      11206,
      14306
    ]
  },
  "Noah": {
    "source_legs": [
      2300,
      700
    ],
    "images": [
      3200,
      700
    ],
    "path2": [
      1406,
      4606,
      5306
    ],
    "path3": [
      6,
      4106,
      7306,
      8006
    ]
  },
  "Both": {
    "source_legs": [
      1700,
      600,
      700
    ],
    "images": [
      7100,
      600,
      700
    ],
    "path2": [
      1406,
      8506,
      9106,
      9806
    ],
    "path3": [
      6,
      4106,
      11206,
      11806,
      12506
    ]
  }
}
```

## Finding

SP Regular changes by−6300 at the Noah-only partition and by−1800 when both nodes are retained.

## Reassessment

Because the Regular responses differ, test the same source-named600 interval in Cumulative mode next.

## Checks

```json
{
  "expected_heads": true,
  "same_source_total": true
}
```

## Closed utc

2026-09-29T01:14:19.272820+00:00

## Record provenance

Exact record hash: `88b8a0de905c6dc10b68605881e0d7cbd3a5de6efee701ce4c7d7631e3c4a6dd`

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