correspondence
type: Thing
alternate name: total relation
description: binary relation which is left-total and right-total (but not necessarily left-unique or right-unique)
additional property: PropertyValue
  property ID: P279
  value: serial relation
additional property: PropertyValue
  property ID: P279
  value: surjective relation
additional property: PropertyValue
  property ID: P527
  value: morphism
additional property: PropertyValue
  property ID: P646
  value: /m/0118fq_c
additional property: PropertyValue
  property ID: P1552
  value: bi-totality
confidence:
  popularity graph score:
    score: 0.007
    score pct: 1
    tier: long_tail
    components:
      sitelinks: 8
      sitelinks norm: 0.019
      unique citations: 0
      unique citations norm: 0.0
      monthly pageviews: 0
      monthly pageviews norm: 0.0
  sitelinks: 8
  unique citations: 0
  monthly pageviews: 0
  yearly pageviews: 56
  pageview trend:
    m: 2026-05
    v: 1
  pageview trend:
    m: 2026-05
    v: 30
  pageview trend:
    m: 2026-05
    v: 8
  pageview trend:
    m: 2026-04
    v: 10
  pageview trend:
    m: 2026-04
    v: 7
  popularity:
    sitelinks: 8
    max: 423
    pct: 1.9
  tier: long_tail
claims:
  P279:
    value: Q54940067
    source count: 0
    confidence: 0.0
    value label: serial relation
  P279:
    value: Q19833078
    source count: 0
    confidence: 0.0
    value label: surjective relation
  P527:
    value: Q1948412
    source count: 0
    confidence: 0.0
    value label: morphism
  P646:
    value: /m/0118fq_c
    source count: 0
    confidence: 0.0
  P1552:
    value: Q54933379
    source count: 0
    confidence: 0.0
    value label: bi-totality
meta:
  wikidata id: Q1322856
  domain: general
  level: standard
  html url: https://4ort.xyz/entity/correspondence-q1322856
  markdown url: https://4ort.xyz/entity/correspondence-q1322856.md
  facts url summary: https://4ort.xyz/entity/correspondence-q1322856/facts.json
  facts url standard: https://4ort.xyz/entity/correspondence-q1322856/facts.json
  facts url full: https://4ort.xyz/entity/correspondence-q1322856/facts.json
  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-24T12:34:25.983531Z
  entity updated at: 2026-04-10T23:56:38.014893+00:00Z
  entity created at: 2026-04-10T23:56:38.014893+00:00Z