In this paper is presented the construction of the field of real numbers directly out of the additive group of integers. This construction is short, natural and elementary, moreover it goes in very few steps. I have taught this construction over many years in the beginners classes at the University Basel. A first version has appeared in the arxiv.org.
    • A natural construction of the real numbers (download pdf file)
    Work in progress on Monodromy.
    • Tête-à-tête Monodromy (download ps file)