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bottom type

type that is the subtype of all other types; equivalent to the empty type if uninhabited
Thing initial_object Q3546108
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bottom type

Summary

bottom type is an initial object[1]. It draws 298 Wikipedia views per month (initial_object category, ranking #1 of 2).[2]

Key Facts

  • bottom type's instance of is recorded as initial object[3].
  • bottom type is a type of data type[4].
  • bottom type is the opposite of top type[5].
  • bottom type's notation is recorded as up tack[6].
  • bottom type's different from is recorded as element[7].
  • bottom type's different from is recorded as empty type[8].
  • bottom type's studied by is recorded as type theory[9].

Body

Definition and Type

bottom type's instance of is recorded as initial object[3]. It is a type of data type[4]. It is the opposite of top type[5].

Why It Matters

bottom type draws 298 Wikipedia views per month (initial_object category, ranking #1 of 2).[2] It is known by 4 alternative names across languages and contexts.[10]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [10] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). bottom type. Retrieved May 3, 2026, from https://4ort.xyz/entity/bottom-type
MLA “bottom type.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/bottom-type.
BibTeX @misc{4ortxyz_bottom-type_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{bottom type}}, year = {2026}, url = {https://4ort.xyz/entity/bottom-type}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): bottom type — https://4ort.xyz/entity/bottom-type (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/bottom-type · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 3d ago · YoshiRulz · 2026-05-17 view diff on Wikidata ↗
    Studied by → type theory
    Subclass of → —
    Opposite of → top type
    Instance of → initial object
    + 6 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P2820]]: [[Q204]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.