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Leonardi.DB
a logical geometry project

Die gute Samariterin. Zur Struktur der Supererogation (2002), p. 194
by Wessels, Ulla

Caption

Das zu einem an McNamara orientierten System mit acht deontischen Begriffen gehörige Sechzehneck

Legend

Logic

Aristotelian family
Sigma-8 Graph
Number of labels per vertex (at most)
1
Uniqueness of the vertices up to logical equivalence
Yes
Errors in the diagram
No

Geometry

Shape
Hexadecagon (irregular)
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
German
Lexical field
deontic operators
Contains partial sentences or single words
Yes
Contains abbreviations
No

Edge description

Contains definitions of relations
No
Form
dotted lines
,
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

Additional notes

The partition induced by this sigma-8 diagram consists of 26 concepts. Calculation to be checked.

Sketch:
1) the sigma-5 subdiagram (cf. here) induces a 5-partition
2) there are 6 new formulas: maximal geboten, minimal geboten, erlaubt, and their negations
3) these 6 new formulas induce an 8-partition
4) crosscutting the 5-partition with the 8-partition yields 40 possible concepts
5) the contrarieties of 'minimal geboten' with 'supererogatorisch' and 'deontisch indifferent' and of 'maximal geboten' with 'anstössig' and 'deontisch indifferent' entail that 14 of these possible concepts are inconsistent
6) so 40 - 14 = 26 concepts remain

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