Aristotelian Logic (1991), p. 169
by Parry, William T.; Hacker, Edward A.
Copyright according to our policy
- Aristotelian family
- Sigma-0 Graph
- Boolean complexity
- 1
- Number of labels per vertex (at most)
- 1
- Uniqueness of the vertices up to logical equivalence
- No
- Errors in the diagram
- No
- Shape
- Square (regular)
- Colinearity range
- 0
- Coplanarity range
- 0
- Cospatiality range
- 0
- Representation of contradiction
- By central symmetry
Logic
Geometry
- Conceptual info
- No
- Mnemonic support (AEIO, purpurea ...)
- Yes
- Form
- none
- Label type
- symbolic
- Symbolic field
- logic
- Contains partial formulas or symbols
- Yes
- Logical system
- syllogistics
- Contains definitions of relations
- No
- Form
- solid lines
- Has arrowheads
- Yes
- Overlap
- No
- Curved
- No
- Hooked
- No
- As wide as vertices
- No
- Contains text
- No
- Label type
- none
Vertex description
Edge description
- Diagram is colored
- No
- Diagram is embellished
- No
- Tags
- Boolean closed ;
- non-contingent formulas
Style
Additional notes
- Ass and Iss are tautological (under the assumption of existential import), while Ess and Oss are contradictory (under that same assumption). Hence this diagram contains only non-contingent formulas, and is thus a sigma-0 diagram.