horizontal line test
type: Thing
description: test for the bijectivity of a function
additional property: PropertyValue
  property ID: P646
  value: /m/0fp3t
additional property: PropertyValue
  property ID: P6366
  value: 13245926
additional property: PropertyValue
  property ID: P10283
  value: C13245926
confidence:
  popularity graph score:
    score: 0.007
    score pct: 1
    tier: long_tail
    components:
      sitelinks: 8
      sitelinks norm: 0.019
      unique citations: 2
      unique citations norm: 0.001
      monthly pageviews: 182
      monthly pageviews norm: 0.0
  sitelinks: 8
  unique citations: 2
  monthly pageviews: 182
  yearly pageviews: 297
  pageview trend:
    m: 2026-08
    v: 182
  pageview trend:
    m: 2026-07
    v: 28
  pageview trend:
    m: 2026-06
    v: 32
  pageview trend:
    m: 2026-05
    v: 2
  pageview trend:
    m: 2026-05
    v: 8
  pageview trend:
    m: 2026-05
    v: 2
  pageview trend:
    m: 2026-04
    v: 1
  pageview trend:
    m: 2026-04
    v: 42
  popularity:
    sitelinks: 8
    max: 423
    pct: 1.9
  tier: long_tail
claims:
  P646:
    value: /m/0fp3t
    source count: 1
    confidence: 0.2
  P6366:
    value: 13245926
    source count: 0
    confidence: 0.0
  P10283:
    value: C13245926
    source count: 1
    confidence: 0.2
citations:
  source: OpenAlex
  stated in qid: Q107507571
  retrieved: 2022-01-26
citations:
  source: Freebase Data Dumps
  stated in qid: Q15241312
  pub year: 2013
meta:
  wikidata id: Q985704
  domain: general
  level: standard
  html url: https://4ort.xyz/entity/horizontal-line-test
  markdown url: https://4ort.xyz/entity/horizontal-line-test.md
  facts url summary: https://4ort.xyz/entity/horizontal-line-test/facts.json
  facts url standard: https://4ort.xyz/entity/horizontal-line-test/facts.json
  facts url full: https://4ort.xyz/entity/horizontal-line-test/facts.json
  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-22T21:44:33.635917Z
  entity updated at: 2026-04-10T23:35:20.236241+00:00Z
  entity created at: 2026-04-10T23:35:20.236241+00:00Z