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Leonardi.DB
a logical geometry project

Sur La Structuration du Tableau Des Connectifs Interpropositionnels Binaires (1957), p. 17
by Blanché, Robert

Logic

Aristotelian family
Classical Sigma-2
Boolean complexity
3
Number of labels per vertex (at most)
2
Equivalence between (some) labels of the same vertex
No
Analogy between (some) labels of the same vertex
No
Uniqueness of the vertices up to logical equivalence
Yes

Geometry

Shape
Square (regular)
Colinearity range
0
Coplanarity range
0
Cospatiality range
0
Representation of contradiction
By central symmetry

Vertex description

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

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
Tags
duality
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