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Keith Briggs is a mathematician notable for several world-record achievements in the field of computational mathematics: *The most accurate calculation of the Feigenbaum constants, which was published in ''A precise calculation of the Feigenbaum constants'', Mathematics of Computation 57, 435-439. *The worst known badly approximable irrational pair (''Some explicit badly approximable pairs'', Journal of Number Theory, 103, 71). *The simplest known universal differential equation ((Another universal differential equation )). *The largest number of contributions in the last 5 years to Sloane's On-Line Encyclopedia of Integer Sequences ((search for briggs in OEIS )). Many of these have involved major computations, such as the number of unlabelled graphs on up to 140 nodes. *The computation of the longest sequences of colossally abundant and superabundant numbers, and their application to a test of the Riemann Hypothesis (Experimental Mathematics 15, 251-6). An article about him was in i-squared Magazine, Issue 6 (Winter 2008/9).〔iSquared Magazine Issue 6 () Retrieved 2014-11-16〕 He also studies the etymology of place-names. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Keith Briggs (mathematician)」の詳細全文を読む スポンサード リンク
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