engineering.conformity.zeta_score

Three distinct suites: educational examples on the calculator page, this legacy regression count (11/11 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 1.0.1 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-09-25.o2-o3. Calculation version 1.0.1. CVP 1.0.0-proposed. 4/4 golden · 5/5 CVP boundary · 5/5 invalid · 1/1 property · 1/1 metamorphic · 8/8 O3 · 3/3 cross-interface · 6/6 CVP contract. digest 63c3ec401df5. O2: proficiency-testing zeta vs a separate-module hypot identity (≤2 ULP). Not En, not TUR, and not an ILAC G8 specification decision. ≤2 ULP vs O3 applies only to the published tabulated zeta vectors (pass, the |ζ|=2 boundary, warning, fail, an alias, a negative result, one awkward pair, and equal standard uncertainties). It is not a whole-domain guarantee and does not cover En, TUR, or an ILAC G8 specification decision.

• Golden (oracle-backed) 4 / 4
• CVP boundary 5 / 5
• Invalid input 5 / 5
• Property 1 / 1
• Metamorphic 1 / 1
• O3 high-precision 8 / 8
• Cross-interface 3 / 3
• CVP contract 6 / 6
• Interfaces PASS · UI (SSR) / REST / MCP
• Interface claim ui-ssr is query-result HTML, not a live browser session. Error-path engine·REST·MCP 1/1 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only.
• Verified scope Proficiency-testing zeta from ylab, xref, and standard ulab and uref, + O3 mpmath tabulated zeta.
• Assurance Engineering
• Deferred Not En (expanded U), not TUR, and not an ILAC G8 specification decision.

• release artifacts aligned PASS
• schema output required declared PASS
• schema valid input executes PASS
• engine success output validates schema PASS
• schema rejects incomplete input PASS
• rest success payload validates schema PASS

Fingerprint sha256:287c019113aaac577f14d626b7f5dff7970c3116e042d23e0c398ab96372fb03

Input schema sha256:2ae38a9c85afacf28630860e0c5f2fd7e75539404aec3b0e1bab1e008b160923 · Output schema sha256:f1a743506ba087bd815b41e9a086ad0c38c994fb52208b1431005a211cd59529 · 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.

Tool

zeta-score

Engine

zeta-score

Engine build

2026-09-24

Evidence core

2026-09-24T20:45:15.442Z

Rendered

2026-10-23T01:27:11.174Z

Last reviewed

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Assumptions

• ISO 13528 zeta-score with standard uncertainties ulab and uref
• |ζ| ≤ 2 is pass; 2 < |ζ| < 3 is warning; |ζ| ≥ 3 is fail
• Not En (expanded U), not TUR, and not an ILAC G8 spec decision

Limitations

• ulab and uref are standard uncertainties — this page does not compute U = k·u or En
• Not the normalized error En (that uses already-expanded U)
• Not TUR and not an ILAC G8 specification decision on y
• |ζ| ≤ 2 is pass; 2 < |ζ| < 3 is warning; |ζ| ≥ 3 is fail