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Leonardi.DB
a logical geometry project

Modalverben und Modalitat. Eine kontrastive Untersuchung Deutsch-Italienisch (2001), p. 21
by Milan, Carlo

Copyright according to our policy

Caption

Logische Quadrate der Notwendigkeit (a) und der Möglichkeit (b)

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
No

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
symbolic
Symbolic field
logic
Contains partial formulas or symbols
No
Logical system
modal logic

Edge description

Contains definitions of relations
No
Form
solid lines
Has arrowheads
No
Overlap
No
Curved
No
Hooked
No
Label type
none

Style

Diagram is colored
No
Diagram is embellished
No
Tags
duality

Additional notes

Duality pattern based on the M-operator.
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