Combining Texts

You have chosen 'The Concept of Law' by H.L.A. Hart, 'Martin Heidegger in conversation' by Martin Heidegger and 'Non-Monotonic Logic' by G. Aldo Antonelli

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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