Combining Texts

You have chosen 'Lectures on the History of Philosophy' by Georg W.F.Hegel, 'Letter to Shumacher' by Carl Friedrich Gauss and 'On the General Idea of Proof Theory' by Dag Prawitz

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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