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Leonardi.DB
a logical geometry project

Sur l'opposition des concepts (1953), p. 118
by Blanché, Robert

Logic

Aristotelian family
Jacoby-Sesmat-Blanché Sigma-3
Boolean complexity
3
Number of labels per vertex (at most)
1
Uniqueness of the vertices up to logical equivalence
Yes
Errors in the diagram
No

Geometry

Shape
Hexagon (irregular)
Colinearity range
0
Coplanarity range
0
Cospatiality range
0
Representation of contradiction
By central symmetry

Vertex description

Conceptual info
No
Mnemonic support (AEIO, purpurea ...)
No
Form
none
Label type
linguistic
Language
French
Lexical field
metalogic
Contains partial sentences or single words
Yes
Contains abbreviations
No

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
Tags
Boolean closed
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