送交者: Dishui 于 2005-6-20, 14:34:32:
回答: simple addition was an observed/discovered long before 由 steven 于 2005-6-20, 13:31:28:
10*10****10+1, in which 10*10=10+10+10+***.
Mathematics is about mathematical propositions
and truth. You don't have to reduct everything
to axioms to do mathematics.
when newton invented the calculus, there was
not even a formal definition of LIMIT.