MRQU 2026 — VOUnits / quantity-unit semantics compatibility review request

[Buk Buk]

Dear IVOA Semantics Working Group,

I am requesting independent compatibility review of Machine-Readable
Quantities and Units Core Specification (MRQU Core) v3 RC1 against
IVOA Semantics practice and VOUnits 1.1.

Public program name: MRQU 2026 — Measurement Interoperability Upgrade.

MRQU is a frozen, test-backed interoperability candidate defining
deterministic semantics for quantity kinds, units/charts, rational
dimensions, exact mappings, uncertainty, provenance, canonicalization,
trust registries and executable conformance. It is intended to
interoperate with existing unit languages such as VOUnits rather than
replace them.

I would particularly welcome concrete counterexamples involving
VOUnits parsing/serialization, scaled units, functions, dimensionless
quantities, quantity-kind distinctions, affine/logarithmic cases and
round-trip interoperability.

Pseudonymous author: MRQU-ARM-11f1a8a4ec395d09393ee3c4182a0d89
Public-key SHA-256:
11f1a8a4ec395d09393ee3c4182a0d89aa3838c21b61ed0d2da48d22111e7134
Origin / release assembly: Armenia.

Status: MRQU Core v3 RC1 frozen; external independent audit pending.
Negative findings and incompatibilities are explicitly welcome.

Regards,
Controller of MRQU-ARM-11f1a8a4ec395d09393ee3c4182a0d89
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