Oppositions and Opposites (2012), p. 161
by Schang, Fabien

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Caption

Blanché’s double helix of logical oppositions, their corresponding logical values in QAS, and their incomplete opposite-forming operators among INRC

Logic

Aristotelian family

Sigma-5 Graph

Boolean complexity

4

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 (irregular)

Colinearity range

0–2

Coplanarity range

1

Cospatiality range

0

Representation of contradiction

By some other geometric feature

Vertex description

Conceptual info

No

Mnemonic support (AEIO, purpurea ...)

No

Form

none

Label type

symbolic

Symbolic field

bitstrings

Contains partial formulas or symbols

No

Contains protobitstrings

No

Bitstring length

4

Edge description

Contains definitions of relations

No

Form

solid lines

,

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

From the CO-perspective, this is a C4O1 diagram. (Two strong JSB sigma-3's that are intertwined with each other.)