14 Mar
2007
14 Mar
'07
1:09 a.m.
of 27-28 Feb 1693. Various sites claim for 1693: Newton's 2nd mental breakdown, 1st published description of fluxions, 1st publication of Wallis's Algebra, Leibniz rediscovers determinants, ..., Not clear what happened on 27-28 Feb, or 16-17 Feb if we count the missing eleven days. --rwg