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File:Frege-gegensätze.png

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Description
English: Diagram from p24 of book. Describes "square of opposition" for his system. Taken from purely mechanical scan performed via gallica.bnf.fr; some defects of the scan repaired by hand by myself.
Date
Source Frege, Gottlob, 1879. Begriffsschrift: eine der arithmetischen nachgebildete Formelsprache des reinen Denkens. Halle: L. Nebert.
Author Frege

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Date/TimeThumbnailDimensionsUserComment
current12:36, 8 June 2009Thumbnail for version as of 12:36, 8 June 20092,405 × 1,871 (573 KB)Chalst{{Information |Description={{en|1=Diagram from p24 of book. Describes "square of opposition" for his system. Taken from purely mechanical scan performed via gallica.bnf.fr; some defects of the scan repaired by hand by myself.}} |Source=Frege, Gottlob, 1

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