“…As shown in [14], the condition s m = a m−1 for a 1 implies that max k=1,...,n |λ k | a(1 − (1 − a −1 )/n). This estimate was essentially used for constructing new extrapolation formulas for analytic functions in [9,14]. Other estimates were also obtained e.g.…”
Section: Estimates For Power Sums and Their Componentsmentioning
confidence: 93%
“…Now we give several examples how Theorem 3 can be applied in numerical analysis. We compare these applications with the corresponding ones for (2) and (4) In particular, this means that H n do not generate extrapolation operators appearing in a similar situation for h-sums as in [9,14]. For example, if f (z) ≡ 1, then µ = −1, s m = 0 for m = 1, .…”
Section: 3mentioning
confidence: 99%
“…are usually called h-sums; they were introduced in [13]. The most explored case is η = 1, λ k h(λ k z), λ k ∈ C, see [6,8,9,13,14,16,22]. The paper [13] contains several remarks 1 on the general case (3).…”
In this paper we solve Padé-(i.e. multiple) and Prony (i.e. simple exponential) interpolation problems for the amplitude and frequency sums with equal amplitudes,
“…As shown in [14], the condition s m = a m−1 for a 1 implies that max k=1,...,n |λ k | a(1 − (1 − a −1 )/n). This estimate was essentially used for constructing new extrapolation formulas for analytic functions in [9,14]. Other estimates were also obtained e.g.…”
Section: Estimates For Power Sums and Their Componentsmentioning
confidence: 93%
“…Now we give several examples how Theorem 3 can be applied in numerical analysis. We compare these applications with the corresponding ones for (2) and (4) In particular, this means that H n do not generate extrapolation operators appearing in a similar situation for h-sums as in [9,14]. For example, if f (z) ≡ 1, then µ = −1, s m = 0 for m = 1, .…”
Section: 3mentioning
confidence: 99%
“…are usually called h-sums; they were introduced in [13]. The most explored case is η = 1, λ k h(λ k z), λ k ∈ C, see [6,8,9,13,14,16,22]. The paper [13] contains several remarks 1 on the general case (3).…”
In this paper we solve Padé-(i.e. multiple) and Prony (i.e. simple exponential) interpolation problems for the amplitude and frequency sums with equal amplitudes,
“…Поэтому в [2] был поставлен следующий Вопрос. Можно ли путем сбалансированного выбора параметров и сколь угодно точно экстраполировать значения функции ℎ на окружность | | = 1 < при условии, что все узлы экстраполяции [2] этот вопрос был решен положительно в случае целых функций конечного порядка.…”
Section: п в чунаевunclassified
“…Поэтому в [2] был поставлен следующий Вопрос. Можно ли путем сбалансированного выбора параметров и сколь угодно точно экстраполировать значения функции ℎ на окружность | | = 1 < при условии, что все узлы экстраполяции [2] этот вопрос был решен положительно в случае целых функций конечного порядка. В настоящей работе положительное решение получено для произвольных ана-литических в функций, найдено явное выражение для остаточного члена -кратной экстраполяции и значительно улучшена оценка (8).…”
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