# Logical Extensions of Aristotle's Square (2008), p. 179

by Luzeaux, Dominique; Sallantin, Jean; Dartnell, Christopher

Copyright according to our policy

- Aristotelian family
- Jacoby-Sesmat-BlanchÃ© Sigma-3
- Boolean complexity
- 4
- Number of labels per vertex (at most)
- 1
- Uniqueness of the vertices up to logical equivalence
- No
- Errors in the diagram
- No
- Shape
- Triangular Prism (irregular)
- Colinearity range
- 0â€“1
- Coplanarity range
- 0
- Cospatiality range
- 0
- Representation of contradiction
- By some other geometric feature

### Logic

### Geometry

- Conceptual info
- No
- Mnemonic support (AEIO, purpurea ...)
- No
- Form
- none
- Label type
- generic placeholders

### Vertex description

### Edge description

- Diagram is colored
- No
- Diagram is embellished
- No

### Style

### Additional notes

- Each $B^i$ is equivalent to either $A^i$ above it or $C^i$ below it. Two of the $B$'s are equivalent to their corresponding $A$'s above, while the remaining third $B$ is equivalent to its corresponding $C$ below. After all, if $B^i \equiv A^i$ and $B^j \equiv A^j$, then $B^k \equiv \neg B^i \wedge \neg B^j \equiv \neg A^i \wedge \neg A^j \equiv C^k$.