Combining Texts

You have chosen 'Contrib to Critique of Hegel's Phil of Right' by Karl Marx, 'Boole calculus and the Concept script' by Gottlob Frege and 'Reply to First Objections' by Ren Descartes

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All the ideas for Mathematics, or select a subheading:
      A. Nature of Mathematics
      B. Foundations for Mathematics
      C. Sources of Mathematics