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Public evidence

electrical.parallel_resistor

Machine-checked verification for calculation version 1.0.0 · tier expert_verified

Open calculator API Capability Download JSON CVP Manifest MCP Review policy

CVP: CVP VERIFIED · CVP protocol 1.0.0-proposed · Engineering assurance· Ideal resistors; no temperature/tolerance stack · Protocol · Schema · Production report

Declared partition coverage
PASS · 3/3 declared partitions (named-R, array-R, invalid-domain)
Versions
Calculation 1.0.0 · CVP protocol 1.0.0-proposed
CVP identity
3/3 property · digest 7f0dcbf6653f

Verification

Legacy regression suite: 10/10 calculation tests · Production surface contract 3/3

Three distinct suites: educational examples on the calculator page, this legacy regression count (10/10 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

    This calculator CURRENT · Public schema 1.0.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Calculation version 1.0.0. CVP 1.0.0-proposed. 2/2 golden · 5/5 CVP boundary · 4/4 invalid · 3/3 property · 1/1 cross-interface · 1/1 CVP contract. digest 7f0dcbf6653f.

  • Golden (oracle-backed) 2 / 2
  • CVP boundary 5 / 5
  • Invalid input 4 / 4
  • Property 3 / 3
  • Cross-interface 1 / 1
  • CVP contract 1 / 1
  • Interfaces PASS · UI (SSR) / REST / MCP
  • Interface claim ui-ssr is query-result HTML, not a live browser session.
  • Assurance Engineering
  • release artifacts aligned PASS
  • schema valid input executes PASS
  • engine success output validates schema PASS

Fingerprint sha256:6ded765a8f7d9097f75286617b87571b17f9f63795029f95e01f8fe5aff8fdcb

Input schema sha256:bacaa7d70b434aaa1c2da1490baf2dfa0e9dda77fc7db415e684f05d50798de5 · Output schema sha256:03865f3008fb064fd424aaec85fc0ecd358e6cb007737af98166727424915e25 · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Build & scope

Engine identity and declared limitations.

Tool
parallel-resistor
Engine
parallel-resistor
Engine build
2026-09-10
Evidence core
2026-09-05T02:35:39.217Z
Rendered
2026-09-16T22:03:43.719Z
Last reviewed
2026-08-08

Limitations

  • Parallel only
  • N<2 → NEEDS_TWO_INPUTS

Sources

Standards and references supporting this tool specification. Methods are listed separately — they are algorithms, not bibliographic sources.

Legacy published checks

Golden and boundary cases from the legacy Evidence JSON. CVP property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the Manifest — including SKIP when a suite has no vectors.

IDKindStatusDetail
two-equalgoldenpassExpected n=2 · R_eq=50 · G_S=0.02 · Actual n=2 · R_eq=50 · G_S=0.02
threegoldenpassExpected R_eq=54.54545454545455 · Actual n=3 · R_eq=54.54545454545455 · G_S=0.018333333333333333
needs-twoboundarypassExpected NEEDS_TWO_INPUTS · Actual NEEDS_TWO_INPUTS
zeroboundarypassExpected VALUE_MUST_BE_POSITIVE · Actual VALUE_MUST_BE_POSITIVE
boundary-twoboundarypassExpected R_eq=50 · Actual n=2 · R_eq=50 · G_S=0.02
boundary-needs-twoboundarypassExpected NEEDS_TWO_INPUTS · Actual NEEDS_TWO_INPUTS
boundary-zeroboundarypassExpected VALUE_MUST_BE_POSITIVE · Actual VALUE_MUST_BE_POSITIVE
property-halfpropertypass100∥100=50
property-fourpropertypassfour 10Ω
property-monopropertypasssmaller R → smaller Req