{ "model": { "rank": 3516, "code": "thing-q133250", "model_id": "vr.tr.sequence", "name": "sequence", "purpose": "Let an agent treat a sequence as an ordered structure with an index, a length and a rule, and separate order-bearing sequences from unordered collections.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.QLT", "industry": "", "version": "", "url": "/models/thing/q133250/", "tier": 2, "score": 85, "payload": { "layer": "wikidata", "aliases": [ "rituals of the sweat lodge", "Miyamairi", "eruv", "maypole", "rosary path", "cascade", "stratigraphic series", "HY-2", "priestly ordination", "subdiaconal ordination", "diaconal ordination", "seba Baduy", "nuclear test series", "priestly ordination in the Roman rite", "diaconal ordination in the Roman rite", "graphics pipeline", "tiled rendering", "slide deck", "White paper", "time series", "regularly spaced time series", "geographical time series", "death knell", "series of missions", "biological sequence", "order of succession", "list", "standard input", "primary structure", "amino acid sequence", "telomere length", "outron", "Porphyrogeniture", "succession to a peerage", "CEO succession", "Argentine presidential line of succession", "demise of the Crown", "stratigraphic classification scheme", "OpenStreetMap way", "OpenStreetMap relation" ], "aliasCount": 676, "merged": 676, "knownIn": 85, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.sequence-event", "source": { "dataset": "wikidata", "item": "Q133250", "url": "https://www.wikidata.org/wiki/Q133250", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T04:52:39Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q133250", "registryId": "vr.tr.sequence", "name": "sequence", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.QLT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q133250/", "model": { "registry_id": "vr.tr.sequence", "name": "sequence", "purpose": "Let an agent treat a sequence as an ordered structure with an index, a length and a rule, and separate order-bearing sequences from unordered collections.", "definition": "An ordered succession of items, events or elements, in which order matters; in mathematics, a function from the natural numbers (or an initial segment of them) to a set.", "what_it_is_for": "Representing order: steps of a procedure, events in time, terms of a series, symbols in a string.", "affordances": [ "index and traverse it", "define it, by a rule or by listing", "test properties, such as convergence or monotonicity", "reorder it, which changes what it is" ], "distinguishing_features": [ "Order matters, unlike a set", "Repetition allowed, unlike a set", "Finite or infinite", "A series is the sum of a sequence, not the sequence" ], "appearance": "A list written in order, a timeline, a numbered procedure, or a string of symbols.", "visual_identification": [ "Items in a fixed order, often numbered", "Mathematical notation such as (a_n)", "Ritual or procedural sequences are sequences of steps" ], "physical_properties": [], "families_and_kinds": [ "finite and infinite sequences", "arithmetic and geometric sequences", "sequences of events and procedures", "strings and biological sequences" ], "related_models": [ { "relation": "is confused with", "target": "set", "why": "sets are unordered" }, { "relation": "is confused with", "target": "series", "why": "a series sums terms" }, { "relation": "is used in", "target": "procedure and timeline", "why": "ordered steps and events" }, { "relation": "has kind", "target": "DNA or protein sequence", "why": "biological sequences" } ], "identifiers": [ { "scheme": "OEIS A-number", "value_or_pattern": "A followed by six digits", "note": "integer sequences" } ], "standards_and_regulation": [ "ISO 80000-2 notation for sequences", "Domain standards for procedures, such as BPMN for process sequences" ], "failure_modes_and_hazards": [ "Off-by-one indexing errors", "Order lost when stored as a set", "Assuming convergence without proof" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "structure", "name": "Structure", "description": "Index, length, elements.", "rationale": "A sequence is defined by its index set and elements.", "layers": [ { "id": "index", "name": "Index", "description": "Starting point and range.", "findings": [ { "id": "index-finding", "name": "Indexing", "description": "The index convention.", "questions": [ { "text": "Does indexing start at 0 or 1, and how long is the sequence?", "kind": "definition" }, { "text": "Is it finite or infinite?", "kind": "definition" } ] } ] }, { "id": "elements", "name": "Elements", "description": "What the items are.", "findings": [ { "id": "elements-finding", "name": "Element type", "description": "The type of elements.", "questions": [ { "text": "What kind of items does the sequence contain?", "kind": "definition" }, { "text": "Are repeats allowed?", "kind": "boundary" } ] } ] } ] }, { "id": "rule", "name": "Rule", "description": "How it is generated.", "rationale": "Rules make sequences predictable.", "layers": [ { "id": "definition", "name": "Definition", "description": "Formula or recurrence.", "findings": [ { "id": "definition-finding", "name": "Rule", "description": "The generating rule.", "questions": [ { "text": "What rule generates the sequence?", "kind": "definition" }, { "text": "Is it listed in a reference such as OEIS?", "kind": "provenance" } ] } ] }, { "id": "properties", "name": "Properties", "description": "Monotonic, bounded, convergent.", "findings": [ { "id": "properties-finding", "name": "Properties", "description": "Mathematical properties.", "questions": [ { "text": "Is the sequence monotonic, bounded or convergent?", "kind": "measurement" }, { "text": "What is its limit, if any?", "kind": "measurement" } ] } ] } ] }, { "id": "order-in-practice", "name": "Order in practice", "description": "Procedures and events.", "rationale": "In practice, sequences are steps and events whose order has consequences.", "layers": [ { "id": "procedure", "name": "Procedure", "description": "Steps in order.", "findings": [ { "id": "procedure-finding", "name": "Step order", "description": "The required order.", "questions": [ { "text": "Which steps must happen in which order?", "kind": "definition" }, { "text": "What happens if the order is changed?", "kind": "boundary" } ] } ] }, { "id": "events", "name": "Events", "description": "Chronology.", "findings": [ { "id": "events-finding", "name": "Chronology", "description": "The order of events.", "questions": [ { "text": "In what order did these events occur, according to which source?", "kind": "provenance" }, { "text": "How certain is the ordering?", "kind": "measurement" } ] } ] } ] }, { "id": "storage", "name": "Storage", "description": "Keeping order in data.", "rationale": "Data systems lose order unless it is stored explicitly.", "layers": [ { "id": "representation", "name": "Representation", "description": "Arrays, lists, strings.", "findings": [ { "id": "representation-finding", "name": "Representation", "description": "How it is stored.", "questions": [ { "text": "How is the sequence stored so order is preserved?", "kind": "definition" }, { "text": "What is the cost of access by index?", "kind": "measurement" } ] } ] }, { "id": "errors", "name": "Errors", "description": "Off-by-one and reordering.", "findings": [ { "id": "errors-finding", "name": "Error checks", "description": "Checks against errors.", "questions": [ { "text": "How are indexing errors prevented?", "kind": "action" }, { "text": "Could a sort have changed the order unintentionally?", "kind": "boundary" } ] } ] } ] } ] }, "openQuestions": [ "Should mathematical, procedural and biological sequences be separate entries?", "The registry entry has merged aliases such as rituals and stratigraphic series; should they be split off?", "How should indexing conventions be recorded?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a sequence, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent treat a sequence as an ordered structure with an index, a length and a rule, and separate order-bearing sequences from unordered collections.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: rituals of the sweat lodge, Miyamairi, eruv, maypole, rosary path, cascade, stratigraphic series, HY-2, priestly ordination, subdiaconal ordination, diaconal ordination, seba Baduy.", "676 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 85 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a sequence, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "rituals of the sweat lodge", "Miyamairi", "eruv", "maypole", "rosary path", "cascade", "stratigraphic series", "HY-2", "priestly ordination", "subdiaconal ordination", "diaconal ordination", "seba Baduy" ] } ], "standing": "Described in 85 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 676 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one sequence from another, and a sequence from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a sequence sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a sequence from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a sequence passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a sequence between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a sequence, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a sequence is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What sequence is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of sequence are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is sequence operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of sequence and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of sequence?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as sequence?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a sequence came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a sequence and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a sequence is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a sequence, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a sequence, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a sequence is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }