{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.concrete-number","code":"thing-q4025884","url":"https://ver.cy/models/thing/q4025884/","name":"concrete number","alternateNames":["tricameral legislature","pentacameral legislature","hyakushu uta","medical triad","enneadecad","Icosad","Enumeration of 21","Enumeration of 22","Enumeration of 23","Enumeration of 24","Enumeration of 25","Enumeration of 26"],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.QLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A number used together with a named unit or collection of objects, such as three apples or five kilograms, as opposed to an abstract number, and in the registry a class grouping named sets of a specific count; its aliases, however, name things defined by a number rather than numbers themselves, such as tricameral and pentacameral legislatures with three and five chambers, the Japanese hyakushu uta, a sequence of one hundred poems, medical triads of three clinical signs, and terms for groups of nineteen and twenty, enneadecad and icosad, which are better linked to their own subjects.","purpose":"Let an agent explain concrete numbers, relay the distinction from abstract numbers in mathematics education and philosophy from mathematics sources, describe the named number-based concepts and flag them as misfiled, and distinguish concrete numbers from quantities with units, cardinal numbers, collective nouns and the named things themselves.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Tied to units or objects","Educational concept","Contrasts with abstract numbers","Aliases are misfiled"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What a concrete number is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is a concrete number, and how does it differ from quantities, cardinal numbers, collective nouns and named things?","kind":"definition"},{"text":"Is the question about maths teaching, measurement or one of the named concepts?","kind":"boundary"}]}]},{"id":"named","name":"Named","description":"Named concepts.","findings":[{"id":"named-finding","name":"Named","description":"Named.","questions":[{"text":"What are tricameral and pentacameral legislatures, hyakushu uta, medical triads, enneadecads and icosads?","kind":"definition"},{"text":"Which entry fits the specific concept?","kind":"action"}]}]}]},{"id":"maths","name":"Mathematics","description":"Mathematics.","layers":[{"id":"abstract","name":"Abstract","description":"Abstract versus concrete.","findings":[{"id":"abstract-finding","name":"Abstract","description":"Abstract.","questions":[{"text":"How have mathematicians and educators distinguished abstract and concrete numbers?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"units","name":"Units","description":"Quantities and units.","findings":[{"id":"units-finding","name":"Units","description":"Units.","questions":[{"text":"How does ISO 80000 define quantities as number times unit?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"things","name":"Things","description":"Number-named things.","layers":[{"id":"legislatures","name":"Legislatures","description":"Multi-chamber legislatures.","findings":[{"id":"legislatures-finding","name":"Legislatures","description":"Legislatures.","questions":[{"text":"What were tricameral and pentacameral legislatures, such as South Africa s 1984 tricameral parliament?","kind":"provenance"},{"text":"Which entry fits Tricameral Parliament?","kind":"action"}]}]},{"id":"triads","name":"Triads","description":"Medical triads.","findings":[{"id":"triads-finding","name":"Triads","description":"Triads.","questions":[{"text":"What are medical triads such as Beck s triad?","kind":"provenance"},{"text":"Which entry fits Beck s triad?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Culture.","layers":[{"id":"poetry","name":"Poetry","description":"Hyakushu.","findings":[{"id":"poetry-finding","name":"Poetry","description":"Poetry.","questions":[{"text":"What is a hyakushu poem sequence in Japanese literature?","kind":"provenance"},{"text":"Which entry fits Hyakunin Isshu?","kind":"action"}]}]},{"id":"teaching","name":"Teaching","description":"Teaching counting.","findings":[{"id":"teaching-finding","name":"Teaching","description":"Teaching.","questions":[{"text":"How do children move from concrete to abstract number concepts?","kind":"provenance"},{"text":"Which entry fits number sense?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Distinguish concrete numbers, tied to units or objects, from abstract numbers in teaching and data.","Check that quantities in a calculation carry their units consistently."],"mustNot":["Drop the unit from a concrete number in a way that changes its meaning.","Add or compare concrete numbers with different units without conversion.","Present a count of people or items more precisely than the source supports."],"requiresHuman":["Publishing counts that drive decisions on resources for people."]},"ethics":{"considerations":["Counts of people and goods guide policy; careless numbers mislead."],"affectedParties":["Students","Users of statistics"]},"owners":{"steward":"Nobody owns the concept.","roles":[],"masterSystems":[]},"relations":[{"target":"Q107715","type":"parent","note":"registry parent class"},{"target":"physical quantity","type":"related","note":"in registry terms"},{"target":"abstract number","type":"related"},{"target":"cardinal number","type":"related"},{"target":"tricameralism","type":"related","note":"misfiled alias"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.concrete-number","Wikidata: Q4025884 (https://www.wikidata.org/wiki/Q4025884)"]},"properties":{"applicability":"not-applicable","items":["example: 3 apples note","hyakushu: one hundred poems note - as in Hyakunin Isshu","registry parent: physical quantity note"]},"recognition":{"applicability":"optional","items":["Number attached to a unit or collection","Tricameral legislature, pentacameral legislature, hyakushu uta, medical triad, enneadecad, icosad","Quantities combine numbers and units; cardinals are abstract sizes; collective nouns name groups; legislatures and poems are things","Not a visible object; expressions such as three books."]},"capabilities":{"applicability":"required","items":["explain the concept","relay the abstract versus concrete distinction","describe named number-based concepts","flag misfiled aliases"]},"hazards":{"applicability":"required","items":["Treating named groups as numbers","Confusing counts and measurements","Misfiled aliases"]},"interfaces":{"applicability":"required","items":["ISO 80000-1 on quantities and units"]},"context":{"applicability":"required","items":["Counting and measuring specific things.","counts of objects","measurements with units","number-named groups such as triads","number-based institutional forms such as tricameralism"]}},"sources":[{"title":"Wikidata item Q4025884: concrete number","url":"https://www.wikidata.org/wiki/Q4025884","note":"identity and sense of the item"},{"title":"Wikipedia: Concrete number","url":"https://en.wikipedia.org/wiki/Concrete_number","note":"general description of the item"}],"openQuestions":["The registry aliases naming legislatures, poem sequences and triads should be moved to their own entries","How should mathematics education sources be linked?","Should concrete number be merged with quantity entries?"],"resources":{"spec":"/models/things/publications/thing-q4025884/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q4025884/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T21:11:33Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:59+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}