The Square of Opposition: From Russell's Logic to Kant's Cosmology (2014), p. 379
by Mion, Giovanni
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- Aristotelian family
- Classical Sigma-2
- Boolean complexity
- 3
- Number of labels per vertex (at most)
- 2
- Equivalence between (some) labels of the same vertex
- No
- Analogy between (some) labels of the same vertex
- No
- Uniqueness of the vertices up to logical equivalence
- Yes
- Errors in the diagram
- No
- Shape
- Rectangle (irregular)
- Colinearity range
- 0
- Coplanarity range
- 0
- Cospatiality range
- 0
- Representation of contradiction
- By central symmetry
Logic
Geometry
- Conceptual info
- Yes
- Mnemonic support (AEIO, purpurea ...)
- No
- Form
- none
- Label type
- linguistic ,
- symbolic
- Language
- English
- Lexical field
- philosophy ,
- adjectives
- Contains partial sentences or single words
- No
- Contains abbreviations
- No
- Symbolic field
- logic
- Contains partial formulas or symbols
- No
- Logical system
- predicate logic
Vertex description
Edge description
- Diagram is colored
- No
- Diagram is embellished
- No
- Tags
- Kant
Style
Additional notes
- (i) and (iv) are contradictories.
(ii) and (iii) are contradictories.
(iii) and (iv) are contraries.
(i) and (ii) are subcontraries.
Subalternation from (iii) to (i).
Subalternation from (iv) to (ii).