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Leonardi.DB
a logical geometry project

The Singular Square: Contrariety and Double Negation from Aristotle to Homer (2014), p. 28
by Horn, Laurence

Copyright according to our policy

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

Edge description

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

Style

Diagram is colored
Yes
Diagram is embellished
No
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