Disentangling Contradiction from Contrariety via Incompatibility (2016), p. 164
by Beziau, Jean-Yves

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Caption

The meta-hexagon of opposition from a negative perspective

Logic

Aristotelian family

Jacoby-Sesmat-Blanché Sigma-3

Boolean complexity

4

Number of labels per vertex (at most)

1

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

Language

English

Lexical field

metalogic

Contains partial sentences or single words

Yes

Contains abbreviations

No

Edge description

Style

Diagram is colored

Yes

Diagram is embellished

No

Additional notes

This diagram has Boolean complexity 4, because next to CD, C and SC, there is still a fourth possibility (NCD).