Introduction to Medieval Logic (1993), p. 148
by Broadie, Alexander
Copyright according to our policy
- Aristotelian family
- Classical Sigma-2
- Boolean complexity
- 3
- Number of labels per vertex (at most)
- 1
- 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
- Language
- English
- Lexical field
- unusual construction
- Contains partial sentences or single words
- No
- Contains abbreviations
- Yes
- Contains definitions of relations
- No
- Form
- none
- Has arrowheads
- No
- 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
Style
Additional notes
- About the letters $a$ and $b$ that occur in this square:
* "The letter $a$ placed immediately before a categorematic term gives merely confused supposition to that term, and its power to give such supposition overrides the power of any other syncategorematic sign to give that term any other sort of supposition." (p. 142)
* "$b$ gives determinate supposition to the immediately following categorematic term, and its power to give that supposition cannot be overridden by any other sign." (p. 145)