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Leonardi.DB
a logical geometry project

Structures of opposition induced by relations. The Boolean and the gradual cases (2016), p. 360
by Ciucci, Davide; Dubois, Didier; Prade, Henri

Caption

Hexagon associated with the front facet of the cube

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
No

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
formal concept analysis

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
Tags
Boolean closed
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