On the Theory of Deduction. I and II.

POPPER Karl R. (1948.)


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Original offprint. 8vo (260 x 280mm). 23, [1, rear wrapper] pp. Original printed wrappers, stapled as issued (wrappers edge worn and slightly dusty, otherwise very good). Amsterdam, North-Holland Pub. Co.

The first separate appearance of this important work on the foundations of deductive logic, an often neglected period of Popper's research interests between 1947 and 1949, being an offprint from the Proceedings of Koninklijke Nederlandsche Akademie Van Wetenschappen, Vol. LI, Nos 2 and 3. 

"In sections I and II of this paper, new primitive rules for derivational logic will be formulated and proofs will be given of the principal rules of derivational logic proposed in three earlier papers ... In section III, a few concepts of the general theory of derivation will be introduced. Some of these will be used in the subsequent sections in which certain problems concerning the definitions of classical and intuitionist negation will be discussed."

Rare. OCLC / COPAC list only three copies, two in the UK held by Cambridge University and the Warburg Institute, and one in Canada at McMaster University.

Stock Code: 231984

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