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Leonardi.DB
a logical geometry project

Polynesian Tapu in the 'Deontic Square': A Cognitive Concept, its Linguistic Expression and Cultural Context (2003), p. 134
by Bender, Andrea; Beller, Sieghard

Caption

The deontic square of opposition.

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 some other geometric feature

Vertex description

Conceptual info
No
Mnemonic support (AEIO, purpurea ...)
No
Form
rectangular
Label type
linguistic
Language
English
Lexical field
deontic operators
Contains partial sentences or single words
Yes
Contains abbreviations
No

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
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