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Leonardi.DB
a logical geometry project

The Geometry of Logical Opposition (2009), p. 154
by Moretti, Alessio

Copyright according to our policy

Caption

two symmetrical antagonist points of view (the one of A1 and the one of E1)

Logic

Number of labels per vertex (at most)
1
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
dots
Label type
symbolic
,
none
Symbolic field
logic
Contains partial formulas or symbols
Yes
Logical system
syllogistics

Edge description

Contains definitions of relations
No
Form
solid lines
Has arrowheads
Yes
Overlap
No
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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