[1]: History of logarithms [2.a]: John Napier [2.b]: Napierian logarithm [3]: Henry Briggs [4.a] William Oughtred [4.b] Slide rule [4.c]: Logarithm [5]: Common logarithm [6]: Natural logarithm [7]: Binary logarithm [8]:Quarter square multiplication [9]: Discrete logarithm [10...