Combining Texts

You have chosen 'Counterpart theory and Quant. Modal Logic' by David Lewis, 'Against Method' by Paul Feyerabend and 'Getting Causes from Powers' by S.Mumford/R.Lill Anjum

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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