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Leonardi.DB
a logical geometry project

On Different Ways to be (dis)similar to Elements in a Set. Boolean Analysis and Graded Extension (2016), p. 614
by Prade, Henri; Richard, Gilles

Caption

Hexagon induced by $\textit{Eq}(a, b, c, d)$, $\textit{Inv}(a, b, c, d)$ and $\bigvee_i H_i(a, b, c, d)$

Logic

Number of labels per vertex (at most)
1
Uniqueness of the vertices up to logical equivalence
Yes
Errors in the diagram
No

Geometry

Shape
Hexagon (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
,
symbolic
Language
English

Edge description

Contains definitions of relations
No
Form
solid lines
,
none
,
dashed lines
Has arrowheads
Yes
Overlap
No
Curved
No
Hooked
No
As wide as vertices
No
Contains text
No
Label type
none

Style

Diagram is colored
No
Diagram is embellished
No
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