density matrix

matrix describing a quantum system in a pure or mixed state, a statistical mixture of quantum states
Thing general Q831774
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density matrix

Summary

density matrix ranks in the top 2% of general entities by monthly Wikipedia readership (496 views/month).[1]

Key Facts

  • density matrix is credited with the discovery of Lev Landau[2].
  • density matrix is credited with the discovery of John von Neumann[3].
  • density matrix is credited with the discovery of Felix Bloch[4].
  • density matrix's subclass of is recorded as hermitian matrix[5].
  • density matrix's subclass of is recorded as positive-semidefinite matrix[6].
  • density matrix's subclass of is recorded as operator[7].
  • density matrix's Commons category is recorded as Density matrix[8].
  • density matrix's Freebase ID is recorded as /m/0gyzn[9].
  • density matrix's facet of is recorded as quantum information science[10].
  • density matrix's facet of is recorded as statistical physics[11].
  • density matrix's facet of is recorded as molecular physics[12].
  • density matrix's Stack Exchange tag is recorded as https://physics.stackexchange.com/tags/density-operator[13].
  • density matrix's different from is recorded as dense matrix[14].
  • density matrix's Google Knowledge Graph ID is recorded as /g/11h_w1w5_y[15].
  • density matrix's Great Russian Encyclopedia Online ID is recorded as 2194413[16].
  • density matrix's nLab ID is recorded as density matrix[17].
  • density matrix's Microsoft Academic ID is recorded as 56911000[18].
  • density matrix's Encyclopedia of Mathematics article ID is recorded as Density_matrix[19].
  • density matrix's Namuwiki ID is recorded as 밀도행렬[20].
  • density matrix's OpenAlex ID is recorded as C56911000[21].

Body

Works and Contributions

Credited discoveries include Lev Landau[2], a physicist[22], 1908–1968[23], of Russian Empire[24], awarded the Nobel Prize in Physics[25], specialised in theoretical physics[26]; John von Neumann[3], a mathematician[27], 1903–1957[28], of Hungary[29], awarded the Medal of Freedom[30], specialised in functional analysis[31]; and Felix Bloch[4], a physicist[32], 1905–1983[33], of United States[34], awarded the Nobel Prize in Physics[35], specialised in physics[36].

Why It Matters

density matrix ranks in the top 2% of general entities by monthly Wikipedia readership (496 views/month).[1] It has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[37] It is known by 33 alternative names across languages and contexts.[38]

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . Freebase Data Dumps. wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . wikidata.org.
  18. [19] ↑ . wikidata.org.
  19. [20] ↑ . wikidata.org.
  20. [21] ↑ . OpenAlex. Retrieved . docs.openalex.org. Provenance: wikidata.org.

Inline context (facts about related entities)

  1. [22] ↑ . Wikidata. wikidata.org. → on this site
  2. [23] ↑ . Wikidata. wikidata.org. → on this site
  3. [24] ↑ . Wikidata. wikidata.org. → on this site
  4. [25] ↑ . Wikidata. wikidata.org. → on this site
  5. [26] ↑ . Wikidata. wikidata.org. → on this site
  6. [27] ↑ . Wikidata. wikidata.org. → on this site
  7. [28] ↑ . Wikidata. wikidata.org. → on this site
  8. [29] ↑ . Wikidata. wikidata.org. → on this site
  9. [30] ↑ . Wikidata. wikidata.org. → on this site
  10. [31] ↑ . Wikidata. wikidata.org. → on this site
  11. [32] ↑ . Wikidata. wikidata.org. → on this site
  12. [33] ↑ . Wikidata. wikidata.org. → on this site
  13. [34] ↑ . Wikidata. wikidata.org. → on this site
  14. [35] ↑ . Wikidata. wikidata.org. → on this site
  15. [36] ↑ . Wikidata. wikidata.org. → on this site

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [37] ↑ . Wikidata sitelinks. wikidata.org.
  3. [38] ↑ . 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). density matrix. Retrieved October 4, 2026, from https://4ort.xyz/entity/density-matrix
MLA “density matrix.” 4ort.xyz Knowledge Graph, 4ort.xyz, 4 Oct. 2026, https://4ort.xyz/entity/density-matrix.
BibTeX @misc{4ortxyz_density-matrix_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{density matrix}}, year = {2026}, url = {https://4ort.xyz/entity/density-matrix}, note = {Accessed: 2026-10-04}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): density matrix — https://4ort.xyz/entity/density-matrix (retrieved 2026-10-04)

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