Nikolai Lobachevsky
E208857
Nikolai Lobachevsky was a Russian mathematician renowned as a founder of non-Euclidean geometry, whose work revolutionized the understanding of space and geometry.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Nikolai Lobachevsky canonical | 10 |
| Nikolai Ivanovich Lobachevsky | 2 |
| Lobachevsky | 1 |
| Николай Иванович Лобачевский | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1859403 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Nikolai Lobachevsky Context triple: [Lobachevsky Prize, namedAfter, Nikolai Lobachevsky]
-
A.
Alexander Friedmann
Alexander Friedmann was a Russian physicist and mathematician who first formulated the expanding-universe solutions to Einstein’s field equations, laying the foundations of modern cosmology.
-
B.
Carl Gustav Jacob Jacobi
Carl Gustav Jacob Jacobi was a 19th-century German mathematician renowned for his fundamental contributions to elliptic functions, number theory, and differential equations.
-
C.
Pavel Alexandrov
Pavel Alexandrov was a prominent Russian-Soviet mathematician known for his foundational contributions to topology and his role in developing the Moscow school of mathematics.
-
D.
Lazar Lyusternik
Lazar Lyusternik was a Russian mathematician known for his contributions to topology, variational problems, and the development of the Lusternik–Schnirelmann category in critical point theory.
-
E.
Eugene Gauss
Eugene Gauss was one of the sons of the renowned German mathematician Carl Friedrich Gauss.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Nikolai Lobachevsky Target entity description: Nikolai Lobachevsky was a Russian mathematician renowned as a founder of non-Euclidean geometry, whose work revolutionized the understanding of space and geometry.
-
A.
Alexander Friedmann
Alexander Friedmann was a Russian physicist and mathematician who first formulated the expanding-universe solutions to Einstein’s field equations, laying the foundations of modern cosmology.
-
B.
Carl Gustav Jacob Jacobi
Carl Gustav Jacob Jacobi was a 19th-century German mathematician renowned for his fundamental contributions to elliptic functions, number theory, and differential equations.
-
C.
Pavel Alexandrov
Pavel Alexandrov was a prominent Russian-Soviet mathematician known for his foundational contributions to topology and his role in developing the Moscow school of mathematics.
-
D.
Lazar Lyusternik
Lazar Lyusternik was a Russian mathematician known for his contributions to topology, variational problems, and the development of the Lusternik–Schnirelmann category in critical point theory.
-
E.
Eugene Gauss
Eugene Gauss was one of the sons of the renowned German mathematician Carl Friedrich Gauss.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Russian mathematician
ⓘ
academic ⓘ human ⓘ mathematician ⓘ |
| academicDiscipline | mathematics ⓘ |
| birthDate | 1792-12-01 ⓘ |
| birthPlace |
Nizhny Novgorod Governorate
ⓘ
Russian Empire ⓘ |
| countryOfCitizenship | Russian Empire ⓘ |
| deathDate | 1856-02-24 ⓘ |
| deathPlace |
Kazan
ⓘ
Russian Empire ⓘ |
| describedBySource | history of mathematics ⓘ |
| educatedAt | Kazan University ⓘ |
| employer | Kazan University ⓘ |
| ethnicGroup | Russian ⓘ |
| familyName |
Nikolai Lobachevsky
self-linksurface differs
ⓘ
surface form:
Lobachevsky
|
| fieldOfWork |
geometry
ⓘ
mathematics ⓘ non-Euclidean geometry ⓘ |
| givenName |
Nikolay
ⓘ
surface form:
Nikolai
|
| hasCanonicalName |
Nikolai Lobachevsky
self-linksurface differs
ⓘ
surface form:
Nikolai Ivanovich Lobachevsky
|
| hasPartOfName | Ivanovich ⓘ |
| influenced |
David Hilbert
ⓘ
Henri Poincaré ⓘ János Bolyai ⓘ development of modern geometry ⓘ |
| influencedBy |
Carl Friedrich Gauss
ⓘ
Euclid ⓘ |
| knownFor |
Non-Euclidean Geometry
ⓘ
surface form:
Lobachevskian geometry
founding non-Euclidean geometry ⓘ hyperbolic geometry ⓘ |
| languageOfWorkOrName |
Latin
ⓘ
Russian ⓘ |
| memberOf |
Kazan University
ⓘ
surface form:
Kazan University faculty
|
| nativeName |
Nikolai Lobachevsky
self-linksurface differs
ⓘ
surface form:
Николай Иванович Лобачевский
|
| notableIdea |
denial of Euclid's parallel postulate
ⓘ
hyperbolic parallelism ⓘ |
| notableWork |
Non-Euclidean Geometry
ⓘ
surface form:
Imaginary Geometry
On the Principles of Geometry ⓘ foundations of hyperbolic geometry ⓘ |
| occupation |
mathematician
ⓘ
university rector ⓘ |
| placeOfBurial | Kazan ⓘ |
| positionHeld |
professor at Kazan University
ⓘ
rector of Kazan University ⓘ |
| sexOrGender | male ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Nikolai Lobachevsky Description of subject: Nikolai Lobachevsky was a Russian mathematician renowned as a founder of non-Euclidean geometry, whose work revolutionized the understanding of space and geometry.
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Nikolai Ivanovich Lobachevsky
this entity surface form:
Lobachevsky
this entity surface form:
Николай Иванович Лобачевский
this entity surface form:
Nikolai Ivanovich Lobachevsky
subject surface form:
Non-Euclidean geometry