last
Let an agent explain the concept of the last element or member, relay its uses in computing, mathematics, linguistics and records, and distinguish this sense from the shoemaker last and other homonyms.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Meaning What last means here.
Definition
Definition.
Definition
Definition.
- What does last mean as the final member of an ordering, and what does it depend on? definition
- Is the question about the final element or about a shoemaker last or a weight unit? boundary
Fields
Uses across fields.
Fields
Fields.
- How is the last element used in mathematics, computing, linguistics and record-keeping? definition
- Which entry fits the specific field? action
Computing Computing.
Elements
Last element and iteration.
Elements
Elements.
- How do languages and algorithms access the last element and handle the last iteration? provenance
- Which entry fits array indexing? action
Errors
Boundary errors.
Errors
Errors.
- What off-by-one and boundary errors involve last elements, and how are they avoided? provenance
- Which references are standard? provenance
Language Linguistics and records.
Phonology
Word-final position.
Phonology
Phonology.
- What phonological processes affect word-final sounds? provenance
- Which entry fits final devoicing? action
Records
Last recorded instances.
Records
Records.
- How are last recorded instances of species, speakers or events documented? provenance
- Which sources are cited? provenance
Context Mathematics and homonyms.
Mathematics
Orderings.
Mathematics
Mathematics.
- When does an ordered set have a last element, and what about infinite sets? provenance
- Which entry fits greatest element? action
Homonyms
Homonyms.
Homonyms
Homonyms.
- What are the shoemaker last and the last as a unit of weight? provenance
- Which entry fits the specific homonym? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Cross-cutting context
- Entry kind
- thing
- Plane
- XCT
- Domain
- XCT.QTY
- Other names and narrower kinds
- last iteration, last element, word final, last recorded instance
What it is Filled
The final member or element of a sequence, group or series, such as the last element of a list, the last iteration of a loop, the final sound of a word in phonology, or the last recorded instance of an event or species; the concept of lastness depends on an ordering and is used in mathematics, computing, linguistics and record-keeping, and the word also names a shoemaker form and a unit of weight, which are separate senses.
Why it exists Filled
Let an agent explain the concept of the last element or member, relay its uses in computing, mathematics, linguistics and records, and distinguish this sense from the shoemaker last and other homonyms.
Distinguishing features Filled
- Depends on ordering
- Cross-field use
- Boundary case in algorithms
- Homonyms
What robots and AI may and may not do Filled
Must not
- Declare a species, language or person the last of its kind without evidence.
- Treat the last item as the most recent when the order is not by time.
- Return a wrong last element due to off-by-one errors without testing.
Only with a human decision
- Declaring something extinct or the last of its kind in public records.
May
- Identify the last element of an ordered sequence and state the ordering used.
- Handle empty sequences explicitly when asked for the last item.
Moral aspects Filled
- Declaring the last of a species or a people carries weight for conservation and identity.
- Off-by-one errors in records can drop the final person or entry.
Who is affected
- Endangered species and communities
- Users of data
Owners Filled
Steward
Nobody owns the concept; the owner of a record answers for its order.
Links to other meta-models Filled
parent
- Q1241356 - registry parent class
- Q36809769 - registry parent class
- Q379825 - registry parent class
- Q4120621 - registry parent class
related
- element - in registry terms
- record - in registry terms, as a last instance
- member of a group - in registry terms
- first - the initial member
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.last-q30013662
- Wikidata: Q30013662 (https://www.wikidata.org/wiki/Q30013662)
Direct properties not applicable Not applicable
Not applicable
Plane XCT: no invented physical properties.
Recognition optional Filled
- Final member of an ordered set
- Last element, last iteration, word-final position, last recorded instance
- A shoemaker last is a foot-shaped form; last as a weight unit is historical
- Not a visible object; the final item in an order.
Capabilities and actions required Filled
- explain the concept
- relay uses across fields
- distinguish homonyms
- route to specific senses
Hazards and failure modes required Filled
- Off-by-one errors in computing
- Ambiguity without a defined ordering
- Confusing homonyms
Standards and interfaces required Filled
- No regulation; conventions in each field
Context of use required Filled
- Not applicable; a positional concept.
- last element of a sequence or list
- last iteration of a loop or process
- word-final position in phonology
- last recorded instance of an event, individual or species
- last in rankings and competitions
Sources Filled
- Wikidata item Q30013662: last - identity and sense of the item
- Wikipedia (ja): 最後 - general description of the item
Open questions
- Should the shoemaker last be linked as a homonym?
- How should field-specific uses be linked?
- The registry aliases mix computing, linguistics and records; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q30013662/spec.json