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Leonardi.DB
a logical geometry project

Logica (1669), fol. 80v
by van Cantelbeke, Henricus Joannes; Damman, Petrus; Blanche, Andreas

Caption

Tabula oppositarum

Logic

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

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
none
Label type
linguistic
Language
Latin
Contains partial sentences or single words
No
Contains abbreviations
Yes

Edge description

Contains definitions of relations
No
Form
none
Has arrowheads
No
Overlap
No
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
No

Style

Diagram is colored
No
Diagram is embellished
Yes
Tags
student notebook
;
Leuven
;
Magister Dixit

Additional notes

The predicate of the I-corner is 'doctus', whereas the predicate of the three other corners is 'animal'. However, this mistake seems to have been corrected: note that 'doctus' is underlined and 'a[nim]al' is written above it.
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