C1037 — Twin-arm terminal condition

Question

What does the second161 arm add after the biographies are fixed?

Inputs

{}

Sources

[
  "File60 §3.2",
  "C1036"
]

Opened utc

2026-09-28T04:03:41.802265+00:00

Results

{
  "arms": [
    161,
    161
  ],
  "terminal_required_by_symmetry": 1406,
  "retained_source_terminal": 1406,
  "A4_residual": 0
}

Finding

With biographies fixed, twin arms impose one condition on the retained terminal. The terminal1406 is source-appointed; the calculation identifies its role rather than selecting it by search.

Reassessment

Test Joseph’s span against that same terminal and its relationship to the other conditions.

Checks

{
  "twin_arms": true,
  "terminal_agrees": true
}

Closed utc

2026-09-28T04:03:41.802869+00:00

Record provenance

Exact record hash: 367da05e2f6c83cb0ac1bad440cb59947081ad4f8519777549768e5fe3cff193

Source journal: Research_Cycles/C0932_C1131/journal.json