# Metalogical Decorations of Logical Diagrams (2016), p. 251

by Demey, Lorenz; Smessaert, Hans

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### Caption

- a A classical Aristotelian square for metalogical notions, on the assumption that $\mathsf{S}$ be consistent, b a degenerated Aristotelian ‘cross’ for the same metalogical notions, without the assumption that $\mathsf{S}$ be consistent

- 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
- No
- Mnemonic support (AEIO, purpurea ...)
- No
- Form
- none
- Label type
- linguistic ,
- symbolic
- Language
- English
- Lexical field
- metalogic
- Contains partial sentences or single words
- No
- Contains abbreviations
- No
- Symbolic field
- metalogic
- Contains partial formulas or symbols
- No
- Contains definitions of relations
- No
- Form
- dotted lines ,
- solid lines ,
- dashed 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
- Leuven