Combining Texts

You have chosen 'Axiomatic Theories of Truth (2013 ver)' by Halbach,V/Leigh,G.E, 'Nihilism without Self-Contradiction' by David Liggins and 'Causation' by Tim Crane

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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