Fano plane
E262444
The Fano plane is the smallest finite projective plane, consisting of seven points and seven lines with rich symmetrical and combinatorial properties.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Fano matroid | 1 |
| Fano plane canonical | 1 |
| Fano plane incidence structure | 1 |
| Heawood graph | 1 |
| Paley graph of order 7 | 1 |
| named after Gino Fano | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2408409 — 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.
Target entity: Fano plane Context triple: [Klein quartic, relatedTo, Fano plane]
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A.
Veblen axioms for projective geometry
The Veblen axioms for projective geometry are a foundational set of incidence-based axioms introduced by Oswald Veblen to rigorously formalize the structure of projective spaces.
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B.
Klein quartic
The Klein quartic is a highly symmetric algebraic curve of genus 3 that plays a central role in complex geometry, group theory, and the study of Riemann surfaces.
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C.
de Bruijn–Erdős theorem
The de Bruijn–Erdős theorem is a fundamental result in combinatorics and graph theory that relates finite and infinite structures, notably asserting that certain properties of infinite graphs or set systems are determined by their finite substructures.
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D.
Fermat curve
A Fermat curve is an algebraic curve defined by an equation of the form \(x^n + y^n = 1\), studied in number theory and algebraic geometry for its rich arithmetic and geometric properties.
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E.
Riemann sphere
The Riemann sphere is the complex plane plus a point at infinity, forming a one-dimensional complex manifold topologically equivalent to a sphere and used to study meromorphic functions and complex analysis.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Fano plane Target entity description: The Fano plane is the smallest finite projective plane, consisting of seven points and seven lines with rich symmetrical and combinatorial properties.
-
A.
Veblen axioms for projective geometry
The Veblen axioms for projective geometry are a foundational set of incidence-based axioms introduced by Oswald Veblen to rigorously formalize the structure of projective spaces.
-
B.
Klein quartic
The Klein quartic is a highly symmetric algebraic curve of genus 3 that plays a central role in complex geometry, group theory, and the study of Riemann surfaces.
-
C.
de Bruijn–Erdős theorem
The de Bruijn–Erdős theorem is a fundamental result in combinatorics and graph theory that relates finite and infinite structures, notably asserting that certain properties of infinite graphs or set systems are determined by their finite substructures.
-
D.
Fermat curve
A Fermat curve is an algebraic curve defined by an equation of the form \(x^n + y^n = 1\), studied in number theory and algebraic geometry for its rich arithmetic and geometric properties.
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E.
Riemann sphere
The Riemann sphere is the complex plane plus a point at infinity, forming a one-dimensional complex manifold topologically equivalent to a sphere and used to study meromorphic functions and complex analysis.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
(7,3,1)-design
ⓘ
Steiner system ⓘ finite geometry ⓘ finite projective plane ⓘ projective plane of order 2 ⓘ symmetric block design ⓘ |
| hasAssociatedMatroid |
Fano plane
self-linksurface differs
ⓘ
surface form:
Fano matroid
|
| hasAutomorphismGroup |
PSL(2,7)
ⓘ
surface form:
PGL(3,2)
|
| hasAutomorphismGroupOrder | 168 ⓘ |
| hasBlockSize | 3 ⓘ |
| hasChromaticNumberOfPointGraph | 3 ⓘ |
| hasCliqueNumberOfPointGraph | 3 ⓘ |
| hasCollineationGroup | PSL(2,7) ⓘ |
| hasCollineationGroupOrder | 168 ⓘ |
| hasDualStructure | isomorphic to itself ⓘ |
| hasGirth | 3 ⓘ |
| hasIncidenceStructure | 7 points and 7 lines with 21 incidences ⓘ |
| hasIndependenceNumberOfPointGraph | 3 ⓘ |
| hasLineGraph | isomorphic to its point graph ⓘ |
| hasLineSetSize | 7 ⓘ |
| hasLinesThroughEachPoint | 3 ⓘ |
| hasNameOrigin |
Fano plane
self-linksurface differs
ⓘ
surface form:
named after Gino Fano
|
| hasNumberOfLines | 7 ⓘ |
| hasNumberOfPoints | 7 ⓘ |
| hasOrder | 2 ⓘ |
| hasParameterB | 7 ⓘ |
| hasParameterK | 3 ⓘ |
| hasParameterLambda | 1 ⓘ |
| hasParameterR | 3 ⓘ |
| hasParameterV | 7 ⓘ |
| hasPointGraph |
Fano plane
self-linksurface differs
ⓘ
surface form:
Paley graph of order 7
|
| hasPointSetSize | 7 ⓘ |
| hasPointsPerLine | 3 ⓘ |
| hasReplicationNumber | 3 ⓘ |
| hasSymmetryProperty |
flag-transitive
ⓘ
line-transitive ⓘ point-transitive ⓘ |
| isIsomorphicTo | projective plane over GF(2) ⓘ |
| isNotRepresentableOver | the real numbers as straight lines in the Euclidean plane ⓘ |
| isRepresentableOver | GF(2) ⓘ |
| isSelfDual | true ⓘ |
| isSmallest | finite projective plane ⓘ |
| isUsedIn |
coding theory
ⓘ
combinatorial constructions ⓘ design theory ⓘ finite geometry ⓘ matroid theory ⓘ |
| satisfiesAxiom |
any two distinct lines meet in a unique point
ⓘ
any two distinct points lie on a unique line ⓘ there exist four points no three of which are collinear ⓘ |
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.
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.
Subject: Fano plane Description of subject: The Fano plane is the smallest finite projective plane, consisting of seven points and seven lines with rich symmetrical and combinatorial properties.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.