An Epistemological and Didactic Study of a Specific Calculus Reasoning Rule

Foundations of the Theory of Signs (1938)

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Charles W. Morris. Foundations of the theory of signs. International encyclopedia of unified science, vol. 1, no. 2. The University of Chicago Press, Chicago1938, vii + 59 pp.

C. H. Langford · Journal of Symbolic Logic · 1938 · 959 citations

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What is mathematics, really?

Choice Reviews Online · 1998 · 375 citations

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Introduction to Logic and to the Methodology of Deductive Sciences.

E. James Nelson, Alfred Tarski · The Philosophical Review · 1942 · 302 citations

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John Selden, Annie Selden · Educational Studies in Mathematics · 1995 · 243 citations

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