Studien und Übungen in formaler Logik von John Neville Keynes [gebunden]
263,31 €
For purposes of illustration Euler's diagrams are employed to a greater extent than is usual in English manuals. So far as I am aware this part constitutes the first systematic attempt that has been made to deal with formal reasonings of the most complicated character without the aid of mathematical or other symbols of operation, and without abandoning the ordinary non-equational or predicative form of proposition.
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