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Leonardi.DB
a logical geometry project

Sur le système des connecteurs interpropositionnels (1969), p. 144
by Blanché, Robert

Logic

Aristotelian family
Sigma-5 Graph
Boolean complexity
4
Number of labels per vertex (at most)
3
Equivalence between (some) labels of the same vertex
Yes
Analogy between (some) labels of the same vertex
No
Uniqueness of the vertices up to logical equivalence
No
Errors in the diagram
No

Geometry

Shape
Hexagon (irregular)
Colinearity range
0–2
Coplanarity range
1
Cospatiality range
0
Representation of contradiction
By some other geometric feature

Vertex description

Conceptual info
No
Mnemonic support (AEIO, purpurea ...)
No
Form
none
Label type
symbolic
Symbolic field
logic
Contains partial formulas or symbols
No
Logical system
propositional logic

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
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