16 citations · 43 across the 47 of their papers we have counts for
Showing 2021Show all
2 papers · 1 filter
math.HO2021
Yet another Proof of an old Hat
Roland Bacher
Every odd prime number p can be written in exactly (p + 1)/2 ways as a sum ab + cd with min(a, b) > max(c, d) of two ordered products. This gives a new proof Fermat's Theorem expre…
math.CO2021
Generic numerical semigroups
Roland Bacher
The use of compositions simplifies some aspects of the theory of numerical semigroups. We illustrate this by giving a new proof for the asymptotic number C((1 + $\sqrt$ 5)/2) g of…