Norman Steenrod
E422977
Norman Steenrod was an influential American mathematician best known for his foundational work in algebraic topology, including the development of Steenrod squares and contributions to cohomology theory.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Norman Steenrod canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4202395 — 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: Norman Steenrod Context triple: [Solomon Lefschetz, notableStudent, Norman Steenrod]
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A.
Hassler Whitney
Hassler Whitney was an influential American mathematician known for foundational contributions to differential topology and geometry, including work on manifolds, embeddings, and singularities.
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B.
Samuel Eilenberg
Samuel Eilenberg was a Polish-American mathematician renowned for his foundational work in algebraic topology and category theory, including the development of Eilenberg–MacLane spaces and homological algebra.
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C.
Heinz Hopf
Heinz Hopf was a German mathematician renowned for his foundational contributions to topology, including the Hopf fibration and Hopf invariant.
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D.
John Milnor
John Milnor is an American mathematician renowned for his groundbreaking work in differential topology, K-theory, and dynamical systems, and is one of the most influential figures in modern mathematics.
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E.
Isadore Singer
Isadore Singer was an American mathematician renowned for co-formulating the Atiyah–Singer Index Theorem, a foundational result linking analysis, topology, and geometry.
- 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: Norman Steenrod Target entity description: Norman Steenrod was an influential American mathematician best known for his foundational work in algebraic topology, including the development of Steenrod squares and contributions to cohomology theory.
-
A.
Hassler Whitney
Hassler Whitney was an influential American mathematician known for foundational contributions to differential topology and geometry, including work on manifolds, embeddings, and singularities.
-
B.
Samuel Eilenberg
Samuel Eilenberg was a Polish-American mathematician renowned for his foundational work in algebraic topology and category theory, including the development of Eilenberg–MacLane spaces and homological algebra.
-
C.
Heinz Hopf
Heinz Hopf was a German mathematician renowned for his foundational contributions to topology, including the Hopf fibration and Hopf invariant.
-
D.
John Milnor
John Milnor is an American mathematician renowned for his groundbreaking work in differential topology, K-theory, and dynamical systems, and is one of the most influential figures in modern mathematics.
-
E.
Isadore Singer
Isadore Singer was an American mathematician renowned for co-formulating the Atiyah–Singer Index Theorem, a foundational result linking analysis, topology, and geometry.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
algebraic topologist
ⓘ
human ⓘ mathematician ⓘ topologist ⓘ |
| awardReceived | Leroy P. Steele Prize NERFINISHED ⓘ |
| coAuthor | Samuel Eilenberg NERFINISHED ⓘ |
| coAuthorOf | Foundations of Algebraic Topology NERFINISHED ⓘ |
| contributedTo |
axiomatic cohomology theory
ⓘ
homology and cohomology operations ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| doctoralAdvisor | Solomon Lefschetz NERFINISHED ⓘ |
| educatedAt |
Princeton University
ⓘ
University of Michigan ⓘ |
| employer | Princeton University ⓘ |
| familyName | Steenrod NERFINISHED ⓘ |
| fieldOfWork |
algebraic topology
ⓘ
mathematics ⓘ topology ⓘ |
| genre | mathematics textbook ⓘ |
| givenName | Norman NERFINISHED ⓘ |
| hasAcademicDiscipline | pure mathematics ⓘ |
| hasConceptNamedAfter |
Steenrod algebra
NERFINISHED
ⓘ
Steenrod problem NERFINISHED ⓘ Steenrod squares NERFINISHED ⓘ |
| influenced |
algebraic topology
ⓘ
homotopy theory ⓘ |
| influencedBy |
Hassler Whitney
NERFINISHED
ⓘ
Solomon Lefschetz NERFINISHED ⓘ |
| knownFor |
contributions to cohomology theory
ⓘ
development of Steenrod squares ⓘ work on fibre bundles ⓘ |
| languageOfWorkOrName | English ⓘ |
| memberOf | American Mathematical Society NERFINISHED ⓘ |
| nationality | American ⓘ |
| notableStudent | J. Peter May NERFINISHED ⓘ |
| notableWork |
Foundations of Algebraic Topology
NERFINISHED
ⓘ
Steenrod squares NERFINISHED ⓘ The Topology of Fibre Bundles NERFINISHED ⓘ cohomology operations ⓘ |
| occupation | university professor ⓘ |
| positionHeld | professor of mathematics at Princeton University ⓘ |
| sexOrGender | male ⓘ |
| wrote |
The Topology of Fibre Bundles
NERFINISHED
ⓘ
cohomology theory papers ⓘ |
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: Norman Steenrod Description of subject: Norman Steenrod was an influential American mathematician best known for his foundational work in algebraic topology, including the development of Steenrod squares and contributions to cohomology theory.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.