EM-XCT-06 · Shared contract · W0
Units, money, locale and calendars
Reusable types for quantities, currencies, ranges, dates, calendars and localized labels.
Partially published; research continues
Claude: independent-study-and-frozen-full-package-audits-complete; Grok: independent-study-and-frozen-full-package-audits-complete.
Published results
Research note, in Russian: Broader EM-XCT-06 is unfinished: multi-field native quantity bindings, uncertainty and non-affine units; general Money value profiles; qualified Price and quantity-price multiplication; FX observations/replay; civil/working calendars and localization. Each requires a separate boundary, evidence and acceptance assignment. Current host authority/history/migration integrations remain external.
Subject boundary and candidate types
- Quantity
- Money
- UnitReference
- CalendarReference
- LocalizedText
Deep research questions
- How to preserve precision and the currency date?
- How to reconcile working calendars?
- How to distinguish a translated name from a new object?
Verifiable invariants
- The unit is stated
- An exchange rate has a source and a date
- The time zone is not lost
End-to-end acceptance scenario
Verify a currency conversion, a time transition and a fractional quantity with explicit rounding.
Negative case
Eight hours in different calendars always yield the same availability.
Approaches to compare
- Current Vercy protocol/MMAS/whole-object and the published WM-XCT
- W3C PROV/SKOS/SHACL/ODRL where applicable
- Practice of source connectors, versioned schemas and policy enforcement
Candidates in the live catalogue
- WM-XCT-008 · Quantity / Unit · 0.3.0-research.1 · installable
Semantic fit requires boundary research; a published model does not by itself complete this card. - WM-XCT-010 · Location Referencing / Address · 0.3.0-research.1 · installable
Semantic fit requires boundary research; a published model does not by itself complete this card. - WM-XCT-031 · Localization / Language · 0.3.0-research.1 · installable
Semantic fit requires boundary research; a published model does not by itself complete this card. - WM-XCT-032 · Currency / Monetary Value · 0.3.0-research.1 · installable
Semantic fit requires boundary research; a published model does not by itself complete this card.
Result requirements
Every card is executed together with the full research contract: definitions, fields and cardinalities, lifecycle, sources, data mastership, rights, the five object facets, at least eight invariants, positive and negative examples, dependencies, migration and applicability limits.