Les Oppositions Modales dans la Logique d'Al Fārābi (2016), p. 24
by Chatti, Saloua
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- Aristotelian family
- Sigma-9 Graph
- Number of labels per vertex (at most)
- 1
- Uniqueness of the vertices up to logical equivalence
- Yes
- Errors in the diagram
- No
- Shape
- Octagon (irregular)
- Colinearity range
- 0–1
- Coplanarity range
- 4
- Cospatiality range
- 0
- Representation of contradiction
- By central symmetry
Logic
Geometry
- Conceptual info
- No
- Mnemonic support (AEIO, purpurea ...)
- No
- Form
- none
- Label type
- linguistic
- Language
- French
- Lexical field
- modal syllogistics ,
- categorical ,
- singular propositions
- Contains partial sentences or single words
- No
- Contains abbreviations
- Yes
Vertex description
Edge description
- Diagram is colored
- No
- Diagram is embellished
- No
Style
Additional notes
- In our annotation we ignore the proposition "Z est possiblement B et possiblement non B". If this proposition is taken into consideration as well, we are dealing with a non-sigma diagram instead of a sigma-9.