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Leonardi.DB
a logical geometry project

Summule - De consequentia - De suppositionibus - De resolubilibus (1475–1500), fol. 6v
anonymous

Logic

Aristotelian family
Classical Sigma-2
Boolean complexity
3
Number of labels per vertex (at most)
2
Equivalence between (some) labels of the same vertex
Yes
Analogy between (some) labels of the same vertex
No
Uniqueness of the vertices up to logical equivalence
Yes
Errors in the diagram
Yes

Geometry

Shape
Rectangle (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
circular
Label type
linguistic
Language
Latin
Lexical field
syllogistics
Contains partial sentences or single words
No
Contains abbreviations
Yes

Edge description

Contains definitions of relations
No
Form
bands
Has arrowheads
No
Overlap
Yes
Curved
No
Hooked
No
As wide as vertices
No
Contains text
Yes
Label type
linguistic
Language
Latin
Contains partial sentences or single words
Yes
Contain abbreviations
Yes

Style

Diagram is colored
Yes
Diagram is embellished
Yes

Additional notes

This diagram contains, strangely, not a single 'primitively lexicalized' quantifier:

- the A-vertex contains "nullus non" and "non aliquis non", but not "omnis"
- the E-vertex contains "quilibet non" and "non aliquis", but not "nullus"
- the I-vertex contains "non quilibet non" and "non nullus", but not "aliquis"

The O-vertex is not primitively lexicalized anyway; in this particular diagram it contains "non nullus non" and the erroneous "non aliquis" (the latter should be either "aliquis non" or "non omnis").
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