Pascal's Triangle Explorer implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t4-105

Effect

Computation or source lookup only

Input and validation requirements

The row-count convention is unspecified, so input 3 can validly be interpreted as either three rows or rows 0 through 3. Negative row counts also require explicit rejection to avoid undefined generation.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "number_of_rows": 0,
    "row_convention": "exactly R rows, zero-indexed"
  },
  "expected_outputs": {
    "triangle": [],
    "row_sums": [],
    "fibonacci_diagonal_sums": [],
    "powers_of_2_row_sums": []
  },
  "working": "R = 0, so there are no generated rows. No recurrence is evaluated, and all output sequences are empty."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche4/tranche4-results.json