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    • Boundary Algebra: A Simple Notation for Boolean Algebra and the Truth Functors 

      Meguire, P. (University of Canterbury. Department of Economics and Finance, 2007)
      Boundary algebra [BA] is a simpler notation for Spencer-Brown’s (1969) primary algebra [pa], the Boolean algebra 2, and the truth functors. The primary arithmetic [PA] is built up from the atoms, ‘()’ and the blank page, ...