You're using an ancient browser to surf the modern web. Please update to the latest version (and don't use Internet Explorer!).

Leonardi.DB
a logical geometry project

Assertions and hypotheses: A logical framework for their opposition relations (2017), p. 141
by Carrarra, Massimiliano; Chiffi, Daniele; De Florio, Ciro

Logic

Aristotelian family
Sherwood-Czeżowski Sigma-3
Boolean complexity
4
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

Geometry

Shape
Hexagon (irregular)
Colinearity range
0
Coplanarity range
0
Cospatiality range
0
Representation of contradiction
By central symmetry

Vertex description

Conceptual info
No
Mnemonic support (AEIO, purpurea ...)
No
Form
none
Label type
symbolic
,
generic placeholders
Symbolic field
logic
Contains partial formulas or symbols
No
Logical system
logic for pragmatics

Edge description

Style

Diagram is colored
No
Diagram is embellished
No
↑ Back to top ↑