Op vrijdag 11 januari 2013 00:33 schreef Jukka K. Korpela:
On title of a 1932/33 book on the "Principle of Contradiction" - a mathematical/logical character in use for book printing???… so the real title is different, and we still don’t know the author.
"Principle of contradiction" is a translation of the title: Der Satz vom Widerspruch. The author is Eberhard Conze. Alex.
