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Leonardi.DB
a logical geometry project

The Geometry of Logical Opposition (2009), p. 292
by Moretti, Alessio

Copyright according to our policy

Caption

the previous good working settification for 2 isolated points does not work with 3 ($\alpha$, $\beta$ and $\gamma$)

Logic

Aristotelian family
Degenerate Sigma-3 with Unconnectedness 12
Boolean complexity
8
Number of labels per vertex (at most)
1
Uniqueness of the vertices up to logical equivalence
Yes
Errors in the diagram
No

Geometry

Shape
Digon (regular)
Colinearity range
4
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
none
Has arrowheads
No
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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