# C990 — Partition compatibility control

## Question

Would an arbitrary nearby allocation produce the same calibrated factor?

## Inputs

```json
{
  "diagnostic_fraction": "1/25",
  "calendar": 364
}
```

## Sources

```json
[
  "C989",
  "prep/key_constraints/questions.json KQ07"
]
```

## Opened utc

2026-09-28T03:53:28.034583+00:00

## Results

```json
{
  "diagnostic_E": "312/287",
  "difference_from_source_E": "1/6601",
  "status": "unadmitted algebraic control"
}
```

## Finding

Replacing1/26 by1/25 changes the factor by1/6601. Calendar-and-partition compatibility is substantive, although reverse-solving prior identities is not independent evidence.

## Reassessment

Determine how the three allocation fractions compose.

## Checks

```json
{
  "changed": true,
  "difference": true
}
```

## Closed utc

2026-09-28T03:53:28.034828+00:00

## Record provenance

Exact record hash: `98b644dd1fb767351a5065deecb84ef274ade100cfcc31a31a683940966624d5`

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