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Public evidence

mechanical.statics.cantilever_combined_at_deflection

Machine-checked verification for calculation version 1.0.0 · tier engine_tested

CVP status

CVP VERIFIED · production STALE · CVP protocol 1.0.0-proposed · Engineering assurance · cantilever uniform + tip load at station (sum); + O3 mpmath tabulated δ.

O3 tabulated vectors only.

Declared partition coverage
PASS · 5/5 declared partitions (main, alias, signed, awkward, invalid-domain)
Versions
Calculation 1.0.0 · CVP protocol 1.0.0-proposed · Evidence 2026-09-27.o2-o3
Verification revision
2026-09-27.o2-o3 · 1/1 property · digest 46cf63572394

Verification

Legacy regression suite: 2/2 calculation tests · Production surface contract 6/6

Three distinct suites: educational examples on the calculator page, this legacy regression count (2/2 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.

    STALE · Build schema 1.0.0 matches page · production binding STALE · Semantic contract ✓ · Last attestation PASS · current evidence changed · re-attestation required · CVP STALE · attestation STALE — Production CURRENT withheld

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-09-27.o2-o3. Calculation version 1.0.0. CVP 1.0.0-proposed. 4/4 golden · 1/1 CVP boundary · 3/3 invalid · 1/1 property · 1/1 metamorphic · 8/8 O3 · 2/2 cross-interface · 6/6 CVP contract. digest 46cf63572394. O2: delta vs a separate-module identity (≤2 ULP). Not tip-only under either component alone, and not a simply supported span. ≤2 ULP vs O3 applies only to the published tabulated cantilever-combined-at vectors.

  • Golden (oracle-backed) 4 / 4
  • CVP boundary 1 / 1
  • Invalid input 3 / 3
  • Property 1 / 1
  • Metamorphic 1 / 1
  • O3 high-precision 8 / 8
  • Cross-interface 2 / 2
  • 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 cantilever uniform + tip load at station (sum); + O3 mpmath tabulated δ.
  • Assurance Engineering
  • Deferred Not tip-only under either component alone, and not a simply supported span.
  • 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 sha256:714b57c5ab16d9e2b2ba9cda306f0c6cb5e8f7bb0fde55fe3e0974a4967740ad

Input schema sha256:71ca66fc247be839b869015a6f43cb446ba7f520220a6272fe88a9cd332f4dd1 · Output schema sha256:eed232d8ef380a4b4ce502576afa9ef6b2103b9f54a6eb49261e1df008a8b0c7 · 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
cantilever-combined-at
Engine
cantilever-combined-at
Engine build
2026-09-24
Evidence core
2026-09-24T23:12:35.236Z
Rendered
2026-09-25T22:02:18.352Z
Last reviewed
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Limitations

  • Tip load
  • x may reach the free end
  • I is an input

Sources

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

Verification disclosure

Aggregate outcomes, scope and artifact commitments are public. Complete test inputs, expected values, execution records and oracle infrastructure are retained privately. This summary does not independently reproduce the full verification run.