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Sören Halldén. A reduction of the primitive symbols of the Lewis calculi. Portugaliae mathematica, vol. 8 no. 2 (for 1949, pub. 1950), pp. 85–88.
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Sören Halldén. A reduction of the primitive symbols of the Lewis calculi. Portugaliae mathematica, vol. 8 no. 2 (for 1949, pub. 1950), pp. 85–88.
Published online by Cambridge University Press: 12 March 2014
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- Copyright © Association for Symbolic Logic 1951