Mathematicians Of The Day

29th October



On this day in 1675, the integral symbol was first used by Gottfried Leibniz in an unpublished manuscript, Analyseos tetragonisticae pars secunda [Second part of analytical quadrature].
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Quotation of the day

From Jean d'Alembert
Algebra is generous: she often gives more than is asked for.
Quoted in D MacHale, Comic Sections (Dublin 1993)