Property talk:P2579

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studied in
subject is studied by this science or domain

Represents	academic discipline (Q11862829)
Data type	Item
Domain	branch of science (Q2465832), broader (note: this should be moved to the property statements)
Allowed values	pretty much anything (note: this should be moved to the property statements)
Example	Ancient Egypt (Q11768) → Egyptology (Q145903) narrative (Q1318295) → narratology (Q382451) volcanism (Q505748) → volcanology (Q102904)
Tracking: usage	Category:Pages using Wikidata property P2579 (Q113163059)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P2579 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 8,878 Main statement 8,789 99% of uses Qualifier 87 1% of uses Reference 2 <0.1% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Value type “specialty (Q1047113), theory (Q17737), field of study (Q2267705), branch of science (Q2465832), scientific law (Q408891), pseudo-scholarship (Q7254446), research (Q42240), science (Q336)”: This property should use items as value that contain property “instance of (P31), subclass of (P279)”. On these, the value for instance of (P31), subclass of (P279) should be an item that uses subclass of (P279) with value specialty (Q1047113), theory (Q17737), field of study (Q2267705), branch of science (Q2465832), scientific law (Q408891), pseudo-scholarship (Q7254446), research (Q42240), science (Q336) (or a subclass thereof). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2579#Value type Q1047113, Q17737, Q2267705, Q2465832, Q408891, Q7254446, Q42240, Q336, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2579#Entity types

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2579#Scope, SPARQL

This property is being used by: ca:Plantilla:Infotaula d'element geològic, ca:Plantilla:Infotaula de llengua, ca:Plantilla:Infotaula llengua es:Plantilla:Ficha de anatomía, es:Plantilla:Ficha de arteria, es:Plantilla:Ficha de encéfalo, es:Plantilla:Ficha de hueso, es:Plantilla:Ficha de nervio, es:Plantilla:Ficha de vena zh-yue:Template:維基數據語言明細 hy:Կաղապար:Տեղեկաքարտ Անատոմիա, hy:Կաղապար:Տեղեկաքարտ Կրոն ga:Teimpléad:WD Bosca Sonraí Teanga yue:Template:維基數據語言明細 be-tarask:Шаблён:Комплексная навука ms:Templat:Kotak info jurnal, ms:Templat:Kotak info jurnal/kotak pasir Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Subclass of « field of study » ?

@D1gggg: : In reference to this edit https://www.wikidata.org/w/index.php?title=Property:P2579&diff=558887217&oldid=558886768 Why not an instance of academic discipline ? author  TomT0m / talk page 13:17, 21 March 2018 (UTC)

@TomT0m: I also think that "instance of" is acceptable, and I changed "subclass of" (Q21514624) to "instance or subclass of" (Q30208840). --Neo-Jay (talk) 11:03, 30 July 2018 (UTC)

Student?

@UWashPrincipalCataloger: I noticed that you added "student" (Q48282) to value-type constraint of P2579 ("studied by", see this) and type constraint of P2578 ("studies", see this), which were originally limited to science or domain. I think that "student" (Q48282), as instance of occupation and subclass of person, should be used as value of P3095（practiced by), not P2579 (studied by), or be used as subject of P425 (field of this occupation) or P101 (field of work), not P2578 (studies). It seems that you like to distinguish "studied by" from "practiced by". But the phrase "studied by" in "studied by physics" and that in "studied by physics student" have different meanings. In some, if not many, languages other than English, the phrases used in these two situations are different. We need to discuss this issue before deciding to change constraints of P2579 (studied by) and P2578 (studies). I have reverted your edits. Please let me know if you disagree. --Neo-Jay (talk) 21:23, 21 January 2022 (UTC)

• I think it's not correct to say that a physics student practices physics, since the student is learning the subject, not practicing it as a profession. One can study something without becoming a practitioner of it. Similarly, I don't think it is correct to say that the field of work of a physics student is physics. A student is not necessarily working in that field. This would be particularly true for, say, a foreign language student. For example, a French student is studying and learning French language, but French language is not their field of work or the field of an occupation. I was a biology student for many years (undergraduate and post-graduate), but I have never worked in the biology field and would not have ever considered myself a biologist. I studied the academic discipline of biology. But it would be misleading to say I practiced biology or it was my field of work. It was my field of study (Q2267705). Maybe property for field of study is needed? UWashPrincipalCataloger (talk) 18:39, 22 January 2022 (UTC)

• Many thanks for your message. I agree that "field of study" is different from "field of work" (P101) and can be created as a new property, which is broader than "academic major" (P812). Do we need to create "studied by (a group of humans)" as the inverse property of "field of study"? If so, its English label has to be clearly distinguished from P2579 ("studied by" (science or domain)). Maybe use "learned by" as its label? Probably we do not need to create an inverse property for "field of study", since "field of work" (P101) also does not have an inverse property. --Neo-Jay (talk) 21:06, 22 January 2022 (UTC)