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Leonardi.DB
a logical geometry project

Philosophical Arguments for an Openist Account of Divine Action (2022), p. 37
by Boyd, Gregory A.

Caption

Triangle of Subcontrary Relations

Logic

Aristotelian family
Jacoby-Sesmat-Blanché Sigma-3
Boolean complexity
3
Number of labels per vertex (at most)
1
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 ...)
No
Form
none
Label type
symbolic
,
philosophical theories
Symbolic field
logic
Contains partial formulas or symbols
No
Logical system
temporal logic

Edge description

Contains definitions of relations
No
Form
bold solid lines
,
solid lines
,
none
Has arrowheads
Yes
Overlap
No
Curved
No
Hooked
No
As wide as vertices
No
Contains text
Yes
Label type
linguistic
,
none
Language
English
Contains partial sentences or single words
Yes
Contain abbreviations
No

Style

Diagram is colored
No
Diagram is embellished
No
Tags
Boolean closed
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