An Alternative to Plemelj-Smithies Formulas on Infinite Determinants

An Alternative to Plemelj-Smithies Formulas on Infinite Determinants
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无限行列式的 Plemelj-Smithies 公式的替代方案

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发表时间:
1993
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通讯作者:
D. Marchetti
D. Marchetti
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作者:
D. Marchetti

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给出了p-正则化量d(p)(K)和D(p)(K)的Plemelj-Smithies公式的另一种形式,它推广了Grothendieck和Fredholm关于p = 1的表达式.这些数量的全球上限。特别是,我们证明,|d(p)(K)|≤ eκ|| K|| pp成立,其中对于p ≥ 3,κ = κ(p)≤ κ(∞)= e−1/4(1 + e2π),这改进了先前的估计,得到κ(p)= e(2 + 1 n(p − 1))。
An alternative to Plemelj-Smithies formulas for the p-regularized quantities d(p)(K) and D(p)(K) is presented which generalizes previous expressions with p = 1 due to Grothendieck and Fredholm. Global upper bounds for these quantities are also presented. In particular, we prove that |d(p)(K)| ≤ eκ||K||pp holds with κ = κ(p) ≤ κ(∞) = e−1/4(1 + e2π) for p ≥ 3 which improves a previous estimate yielding κ(p) = e(2 + 1n(p − 1)).