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Leonardi.DB
a logical geometry project

Deontic Logic (2006), p. 203
by McNamara, Paul

Copyright according to our policy

Logic

Aristotelian family
Non-Sigma
Boolean complexity
3
Number of labels per vertex (at most)
1
Uniqueness of the vertices up to logical equivalence
No
Errors in the diagram
No

Geometry

Shape
Hexagon (regular)
Colinearity range
0
Coplanarity range
0
Cospatiality range
0
Representation of contradiction
N.A.

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
deontic logic

Edge description

Style

Diagram is colored
No
Diagram is embellished
No

Additional notes

OPp is logically equivalent to OP~p.

The negation closure of this diagram is a JSB sigma-3.
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