Note sur les relations d'ordre (1975), p. 431
by Blanché, Robert

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Logic

Aristotelian family

Jacoby-Sesmat-Blanché Sigma-3

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

Errors in the diagram

Yes

Geometry

Shape

Hexagon (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

mathematics

,

logic

Contains partial formulas or symbols

Yes

Logical system

syllogistics

Mathematical branch

order theory

Edge description

Style

Diagram is colored

No

Diagram is embellished

No

Tags

Boolean closed

Additional notes

The subalternation arrow from U to E should actually go from E to U.