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Leonardi.DB
a logical geometry project

A New Square of Opposition: Eubouliatic Logic (1968), p. 271
by Anderson, Alan Ross

Copyright according to our policy

Logic

Aristotelian family
Classical Sigma-2
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
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
generic placeholders

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
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