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Leonardi.DB
a logical geometry project

Expositio super libris Perihermenias (1301–1500), fol. 43
by Burley, Walter

Logic

Aristotelian family
Classical Sigma-2
Boolean complexity
3
Number of labels per vertex (at most)
4
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
Square (regular)
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
modalities
Contains partial sentences or single words
Yes
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
No

Additional notes

'possibile' and its equivalents should move from the upper to the lower left corner.

'non possibile' and its equivalents should move from the lower left to the upper right corner.

'possibile non' and its equivalents should move from the upper to the lower right corner.

'non possibile non' and its equivalents should move from the lower right to the upper left corner.
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