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Leonardi.DB
a logical geometry project

Generalization and Composition of Modal Squares of Oppositions (2016), p. 322
by Pizzi, Claudio

Caption

◦' -composition and ◦''-composition of Aristotelian squares

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
symbolic
,
generic placeholders
Symbolic field
logic
Contains partial formulas or symbols
No
Logical system
propositional logic

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
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