Combining Texts

You have chosen 'Principles of Theoretical Logic' by Hilbert,D/Ackermann,W, 'A Powers Theory of Modality' by Jonathan D. Jacobs and 'Introduction to 'Causation'' by E Sosa / M Tooley

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