Definition availableExact definition Candidate definition
Millimetre to the fourth power
mm⁴cx:mm4 · Second moment of area
1 mm⁴ = (1 mm)^4.
- Quantity kind
- Second moment of area
- SI dimension
L^4- Allowed roles
- Scalar
- Unit system / convention
- SI decimal multiples
- Registry code
mm4
Scope and distinctions
Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.
Available operations
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Verification scope
New UUCE conversion paths have not been CVP-verified or production-attested. An exact unit definition is not a verification claim.
Candidate is a registry lifecycle state. It is not a completed review or CVP verification.
Definition sources
- BIPM — The International System of Units (SI)
9th edition, version 4.01, June 2026
Tables 4–7: coherent derived units, unit algebra and decimal prefixes
Source checked:Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.
Definition and registry versions
- Definition revision
- 1.0.0
- Registry snapshot
- 0.3.0-preview.3 · preview
- Definition lifecycle
- candidate
- Definition owner
- core.metrology
- Definition digest
f03c87c8df89ff88322e2616ad235ee116bd66e02b4212e687e539d999060778- Definition dependency digest
9175d58ae53b0e2e2232be5e8cf5dbcedaf9cf82042cd7d9a3d0e0ca8e25345f
Digests identify definition content; they are not CVP evidence or production attestations.