Elementos de Lógica (2004), p. 61
by Barco Gómez, Carlos

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Caption

Cuadro de oposición de las proposiciones modales

Logic

Aristotelian family

Classical Sigma-2

Boolean complexity

3

Number of labels per vertex (at most)

3

Equivalence between (some) labels of the same vertex

No

Analogy between (some) labels of the same vertex

Yes

Uniqueness of the vertices up to logical equivalence

Yes

Errors in the diagram

No

Geometry

Shape

Rectangle (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 ...)

Yes

Form

rounded rectangular shapes

Label type

linguistic

Language

Spanish

Lexical field

modalities

Contains partial sentences or single words

Yes

Contains abbreviations

No

Edge description

Contains definitions of relations

No

Has arrowheads

Yes

Overlap

Yes

Curved

No

Hooked

No

Style

Diagram is colored

No

Diagram is embellished

No