Napier's bones
E478027
Napier's bones are a manually operated calculating device using numbered rods to simplify and speed up multiplication and division.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Napier's bones canonical | 3 |
| Napier's rods | 1 |
| Napierian bones | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4898378 — 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: Napier's bones Context triple: [John Napier, knownFor, Napier's bones]
-
A.
Prutenic Tables
The Prutenic Tables were influential 16th-century astronomical tables based on Copernican heliocentric theory, used for predicting planetary positions before being superseded by more accurate works like the Rudolphine Tables.
-
B.
Abacus
Abacus is a British publishing imprint known for releasing a wide range of literary and contemporary fiction, often in paperback editions.
-
C.
Mathematical Tables and Other Aids to Computation
Mathematical Tables and Other Aids to Computation was the original title of a pioneering journal devoted to numerical analysis, computational methods, and mathematical tables, later continued under the name Mathematics of Computation.
-
D.
Alberti cipher disk
The Alberti cipher disk is a 15th-century polyalphabetic substitution device, considered one of the earliest mechanical tools for encrypting messages and a foundational innovation in modern cryptography.
-
E.
Trattato d’abaco
Trattato d’abaco is a mathematical treatise by Renaissance artist and mathematician Piero della Francesca, focusing on arithmetic and practical calculation methods.
- 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: Napier's bones Target entity description: Napier's bones are a manually operated calculating device using numbered rods to simplify and speed up multiplication and division.
-
A.
Prutenic Tables
The Prutenic Tables were influential 16th-century astronomical tables based on Copernican heliocentric theory, used for predicting planetary positions before being superseded by more accurate works like the Rudolphine Tables.
-
B.
Abacus
Abacus is a British publishing imprint known for releasing a wide range of literary and contemporary fiction, often in paperback editions.
-
C.
Mathematical Tables and Other Aids to Computation
Mathematical Tables and Other Aids to Computation was the original title of a pioneering journal devoted to numerical analysis, computational methods, and mathematical tables, later continued under the name Mathematics of Computation.
-
D.
Alberti cipher disk
The Alberti cipher disk is a 15th-century polyalphabetic substitution device, considered one of the earliest mechanical tools for encrypting messages and a foundational innovation in modern cryptography.
-
E.
Trattato d’abaco
Trattato d’abaco is a mathematical treatise by Renaissance artist and mathematician Piero della Francesca, focusing on arithmetic and practical calculation methods.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
calculating device
ⓘ
manual calculating aid ⓘ |
| alternativeName |
Napier's rods
ⓘ
linked to:
Napier's bones
Napierian bones ⓘ
linked to:
Napier's bones
|
| basedOn | decimal number system ⓘ |
| calculationType |
digit-by-digit multiplication
ⓘ
lattice-style multiplication ⓘ |
| computationalComplexity | reduces multiplication to addition and reading off partial products ⓘ |
| computingMethod |
repeated addition
ⓘ
use of multiplication tables ⓘ |
| countryOfOrigin | Scotland ⓘ |
| describedIn | Rabdologiae ⓘ |
| era | early 17th century ⓘ |
| fieldOfUse |
arithmetic
ⓘ
astronomy ⓘ commerce ⓘ mathematics ⓘ |
| hasEducationalUse |
teaching arithmetic algorithms
ⓘ
teaching multiplication ⓘ teaching place value ⓘ |
| hasInfluenced |
logarithmic computation methods
ⓘ
mechanical calculators ⓘ slide rule ⓘ |
| hasPart |
multiplication table strips
ⓘ
numbered rods ⓘ |
| inception | 1617 ⓘ |
| inventor | John Napier ⓘ |
| languageOfOriginalDescription | Latin ⓘ |
| materialUsed |
bone
ⓘ
ivory ⓘ metal ⓘ wood ⓘ |
| namedAfter | John Napier ⓘ |
| notableFor |
influencing later mechanical calculators
ⓘ
simplifying long multiplication ⓘ speeding up division ⓘ |
| powerRequirement | none ⓘ |
| publicationDateOfFirstDescription | 1617 ⓘ |
| relatedTo |
Genaille–Lucas rulers
ⓘ
Rabdology ⓘ abacus ⓘ logarithms ⓘ |
| typicalLayout | set of rods arranged side by side ⓘ |
| usedFor |
division
ⓘ
extraction of cube roots ⓘ extraction of square roots ⓘ multiplication ⓘ |
| userInteraction | manual placement and reading of rods ⓘ |
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: Napier's bones Description of subject: Napier's bones are a manually operated calculating device using numbered rods to simplify and speed up multiplication and division.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Napier's bones
linked to: Napier's bones