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Leonardi.DB
a logical geometry project

From Blanché's Hexagonal Organization of Concepts to Formal Concept Analysis and Possibility Theory (2012), p. 160
by Dubois, Didier; Prade, Henri

Caption

Square induced by the 4 operators underlying formal concept analysis

Logic

Aristotelian family
Classical Sigma-2
Boolean complexity
3
Number of labels per vertex (at most)
1
Errors in the diagram
No

Geometry

Shape
Rectangle (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
symbolic

Edge description

Contains definitions of relations
No
Form
solid lines
,
none
,
bold dashed lines
Has arrowheads
Yes
Overlap
No
Curved
No
Hooked
No
As wide as vertices
No
Contains text
No
Label type
none

Style

Diagram is colored
No
Diagram is embellished
No
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