In 1770, E. Waring conjectured that, for every positive integer n , n = x1k + x2k + ... + xsk ( xi ≥ 0), where k ( k ≥ 2) is an integer, there exists s = s ( k ) such that n = x1k + x2k + ... + xsk (xi ≥ 0) has integer solutions x1 , x2 , ..., xs . This is called Waring's problem. In 1909, D. Hilbert proved that such s = s ( k ) does in fact exist. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
E.ウェアリングは,k ( k≧2 ) を1つの整数とするとき,すべての正の整数 n に対して n=x1k+x2k+…+xsk ( xi≧0 ) が整数解 x1,x2,…,xs をもつような s=s(k) が存在することを,1770年に予想した。これがウェアリング (またはワーリング) の問題と呼ばれるものである。 1909年に D.ヒルベルトは,このような s=s(k) が事実存在することを証明した。
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