2018
DOI: 10.15407/dopovidi2018.06.022
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A generalization of the Newton—Kantorovich theorem in a banach space

Abstract: Узагальнення теореми Ньютона-Канторовича в банаховому просторі Представлено членом-кореспондентом НАН України В.Я. Гутлянським Побудовано модифікацію класичного методу Ньютона-Канторовича в банаховому просторі. Для зна ходження розв'язку нелінійного операторного рівняння отримано ітераційну схему із квадратичною збіжністю. Продемонстровано, що побудована модифікація методу Ньютона-Канторовича застосовна для знаходження наближень до розв'язків нелінійних інтегральних та диференціально-алгебраїчних крайових зада… Show more

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Cited by 9 publications
(13 citation statements)
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“…Since the remainder J 0 .z 0 .�; c ⇤ 0 / C x.�; "/; "/ of expansion of the functional J.z; "/ has a higher order of smallness with respect to x and " in the neighborhood of the points x D 0 and " D 0 than the first two terms of expansion (13), we get J 0 .z 0 .�; c ⇤ 0 /; 0/ D 0: We denote a constant .d ⇥ r/ matrix by (8), by virtue of the equality B 0 D J 0 ; this requirement is true. On the other hand, under condition (8), the approximation to the solution of problem ( 1), (2) obtained by using the iterative scheme (10) satisfies the corresponding approximate boundary conditions (2).…”
Section: Critical Case Of the First Ordermentioning
confidence: 86%
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“…Since the remainder J 0 .z 0 .�; c ⇤ 0 / C x.�; "/; "/ of expansion of the functional J.z; "/ has a higher order of smallness with respect to x and " in the neighborhood of the points x D 0 and " D 0 than the first two terms of expansion (13), we get J 0 .z 0 .�; c ⇤ 0 /; 0/ D 0: We denote a constant .d ⇥ r/ matrix by (8), by virtue of the equality B 0 D J 0 ; this requirement is true. On the other hand, under condition (8), the approximation to the solution of problem ( 1), (2) obtained by using the iterative scheme (10) satisfies the corresponding approximate boundary conditions (2).…”
Section: Critical Case Of the First Ordermentioning
confidence: 86%
“…In order to determine the solution c."/ 2 R r of Eq. ( 4), we use the efficient Newton-Kantorovich method [12][13][14]. According to the accepted assumptions, the function F .c.…”
Section: Critical Case Of the First Ordermentioning
confidence: 99%
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