Square_of_opposition,_set_diagrams.svg


Summary

Description

Square of opposition

In the Venn diagrams black areas tell, that the area is empty and red areas tell, that there is at least one element.

Faded red areas and faded arrows apply only in classical logic, where only non empty domains are used.
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Watchduck
You can name the author as "T. Piesk", "Tilman Piesk" or "Watchduck".
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Can be printed as a part of: File:Syllogism diagrams.pdf

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