![](/diagrams/demey_2020_between-square-and-hexagon-in-oresme-s_1dnclctjm_p-38_1ee0k8ohh/images/display.jpeg?url=http%3A%2F%2Fpurl.org%2Flg%2Fdiagrams%2Fdemey_2020_between-square-and-hexagon-in-oresme-s_1dnclctjm_p-38_1ee0k8ohh%2Fimages%2Fdisplay.jpeg)
Between Square and Hexagon in Oresme's Livre du Ciel et du Monde (2020), p. 38
by Demey, Lorenz
![]( /diagrams/demey_2020_between-square-and-hexagon-in-oresme-s_1dnclctjm_p-38_1ee0k8ohh/images/display.jpeg?url=http%3A%2F%2Fpurl.org%2Flg%2Fdiagrams%2Fdemey_2020_between-square-and-hexagon-in-oresme-s_1dnclctjm_p-38_1ee0k8ohh%2Fimages%2Fdisplay.jpeg )
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Caption
- (a) Abstract square of opposition; (b) the lexicalized part of the square.
- Aristotelian family
- Non-Sigma
- 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
- Triangle (irregular)
- Colinearity range
- 0
- Coplanarity range
- 0
- Cospatiality range
- 0
- Representation of contradiction
- N.A.
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
Vertex description
Edge description
- Diagram is colored
- No
- Diagram is embellished
- No
- Tags
- Leuven
Style
Additional notes
- The negation closure of this diagram is a classical sigma-2.