Hyperreals and surreals


Which number system is better suited for infinitesimal analysis: hyperreals or surreals? See Interpreting Conway's remark about using the surreals for non-standard analysis (MO)









Infinitesimal analysis without the axiom of choice
Fermat
Leibniz
Euler
Cauchy
Skolem
Robinson
Nelson
Hrbacek
More on infinitesimals
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