Frege's Lectures on Logic. Carnap's Student Notes 1910-1914 (2004), p. 70
by Frege, Gottlob; Carnap, Rudolf; Reck, Erich H. (ed.); Awodey, Steve (ed.)
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
- Yes
- 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
- syllogistics
- Contains partial sentences or single words
- Yes
- Contains abbreviations
- No
Vertex description
Edge description
- Diagram is colored
- No
- Diagram is embellished
- No
Style
Additional notes
- Subalternation is not explicitly visualized. At the bottom edge of the diagram, "contrary" should be "subcontrary".