Suber, Peter2011-02-142002Peter Suber, Geometry and Arithmetic are Synthetic, http://legacy.earlham.edu/~peters/writing/synth.htm, 2002.http://nrs.harvard.edu/urn-3:HUL.InstRepos:4725028en-USphilosophyGeometry and Arithmetic are SyntheticJournal Article2011-02-14