標(biāo)題: Titlebook: Vladimir I. Arnold - Collected Works; Representations of F Vladimir I. Arnold,Alexander B. Givental,Boris A. Book 2009 Springer-Verlag Ber [打印本頁] 作者: FLAK 時間: 2025-3-21 18:00
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作者: 使隔離 時間: 2025-3-21 23:46 作者: machination 時間: 2025-3-22 03:04 作者: Simulate 時間: 2025-3-22 07:31
Construction Materials and Stress Flow, addition is everywhere dense in the space .(.) of continuous functions defined on the square .. It follows immediately from our result proved below that this is not true for the simplest combinations: the set of functions of the form .[.(.) + .(.)] even turns out to be nowhere dense in .(.).作者: Femine 時間: 2025-3-22 09:06 作者: OVER 時間: 2025-3-22 15:02
Vordefinierte Variablen der Shell . if the equilibrium position is stable in the first (linear) approximation. Then, as was shown by Birkhoff [1], by a proper choice of the variables ., ., . the Hamiltonian assumes the form .where . is an analytic function of ., ., ., . ≥ 2 and arbitrary. We call a case a . case if among the constants .. (2 ≤ . < ∞) is different from zero.作者: OVER 時間: 2025-3-22 20:39 作者: GET 時間: 2025-3-23 01:06
Shell-Programmierung ... im Alleingang on the behavior of a system during an infinite time interval, for example the problem of stability, could not be solved by the theory of perturbations. Planetary motion is described in this theory by series of the form..作者: CORE 時間: 2025-3-23 03:15 作者: WATER 時間: 2025-3-23 08:36
978-3-642-26132-9Springer-Verlag Berlin Heidelberg 2009作者: Generosity 時間: 2025-3-23 10:38 作者: 飲料 時間: 2025-3-23 17:33
Emil Korkis,Mehmet R. Dogar,Ornella Iuorioere: the now-deceased Corresponding Member of the Academy of Sciences of the USSR L.G. Shnirel’man, Professor L.A. Lyusternik (now Corresponding Member of the Academy of Sciences of the USSR), and Doctor I.M. Gel’fand (now Corresponding Member of the Academy of Sciences of the USSR).作者: 愉快么 時間: 2025-3-23 20:20
Analysis Methods for Spatial Structuresains the definition of superposition of functions and the statement of Hilbert’s 13th problem relating to superpositions. §2 is devoted to superpositions of smooth functions. In §3 we present several very recent papers, in spite of the fact that the content of that section is now perhaps only of his作者: 中世紀(jì) 時間: 2025-3-24 02:02 作者: 弓箭 時間: 2025-3-24 02:38 作者: inundate 時間: 2025-3-24 07:14
Shell-Programmierung … im Alleingangthe spaces of line elements and frames of a Riemannian manifold - the isotropic flows. These include flows connected with curves of constant geodesic curvature and with the motion of a charged particle on a smooth surface in the presence of a magnetic field.作者: 露天歷史劇 時間: 2025-3-24 14:15 作者: cringe 時間: 2025-3-24 18:18 作者: morale 時間: 2025-3-24 23:04
Pimpo Hernández,Enrique Ramírez,José SolerДве первые задачи не имели отношения к основной теме. Для полноты освещения занятия кружка мы приводим их; близкая кним по методу решения третья задача являлась подготовительной к четвертой, с которой, по существу, и начиналась тема.作者: maudtin 時間: 2025-3-25 02:35
https://doi.org/10.1057/9781403905291The present work is devoted to the proof of the following theorem, which was stated in an earlier note [1]....(......).........作者: ethereal 時間: 2025-3-25 03:24
https://doi.org/10.1057/97814039052911. Statement of the problem. Let . and . be functions of two variables. Then .is a function of the three variables ., . and .. This is an example of a superposition constituted of the functions . and ..作者: Habituate 時間: 2025-3-25 09:35 作者: magnanimity 時間: 2025-3-25 11:49
Shell-Programmierung … im AlleingangAfter the appearance of the papers by Siegel [1], [2] and Kolmogorov [3], [4] problems with small denominators lost their unapproachability.作者: Infraction 時間: 2025-3-25 18:28 作者: 彎曲的人 時間: 2025-3-25 23:12 作者: 情節(jié)劇 時間: 2025-3-26 00:28
Vordefinierte Variablen der ShellДискретный спектр эргодических динамических систем, определенных дифференциальными уравнениями, связан в известных примерах, с наличием нетривиальной группы чисел вращения. Впервые числа вращения ввел Пуанкаре (.), изучавший интегральные кривые на поверхности тора. Общее определение дал недавно Шварцман (.).作者: 積習(xí)難改 時間: 2025-3-26 04:30
Shell-Programmierung ... im Alleingang1. Let a dynamic system depend on the slowly varying parameter .; then the Hamiltonian .(., .; .) contains the time . and is not conserved. A function .(., .; .) is called an adiabatic invariant of the system if for small . the quantity .(.) = .[.(.), .(.); .(.)] changes slightly during the time . ~ 1/. (changes in ., . are finite here).作者: pulmonary-edema 時間: 2025-3-26 09:12
Shell-Programmierung ... im AlleingangLet the torus .. be realized in the form of the unit square in the plane (.., ..) with pairwise identified sides. A transformation ., given by the integer valued matrix . with determinant ±1 acting on the torus according to the formula ., . = 1, 2, is called an automorphism of ...作者: 低三下四之人 時間: 2025-3-26 15:15
Shell-Programmierung ... im AlleingangВ моей работе ?О представлении непрерывных функций трех переменных суперпозициями непрерывных функций двух переменных?, опубликованной в ?Математическом сборнике? (т. 48 (90) (1959), 3-74), ммеется ошибка, на которую мое внимание любезно обратил Боте (Н. О. Bothe).作者: 松軟無力 時間: 2025-3-26 19:30
On functions of three variables,In the present paper there is indicated a method of proof of a theorem which yields a complete solution of the 13th problem of Hilbert (in the sense of a denial of the hypothesis expressed by Hilbert).作者: DEAWL 時間: 2025-3-27 00:41 作者: 偽造 時間: 2025-3-27 03:34 作者: Cardioplegia 時間: 2025-3-27 07:36
Some questions of approximation and representation of functions,1. Statement of the problem. Let . and . be functions of two variables. Then .is a function of the three variables ., . and .. This is an example of a superposition constituted of the functions . and ..作者: 背景 時間: 2025-3-27 11:18
Kolmogorov seminar on selected questions of analysis,The seminar was concerned with two groups of questions. ... in analysis and mechanics, that is, problems whose solutions are everywhere discontinuously dependent on the parameter, in the main, ‘problems with a small denominator’.作者: 遺傳學(xué) 時間: 2025-3-27 17:11
On analytic maps of the circle onto itself,After the appearance of the papers by Siegel [1], [2] and Kolmogorov [3], [4] problems with small denominators lost their unapproachability.作者: Visual-Field 時間: 2025-3-27 18:10
Generation of almost periodic motion from a family of periodic motions,1. The motion of a point ., . on a torus . is called almost periodic if.where . is an irrational constant, and . and . are coordinates on the torus, such that (. + ., . + .) and (., .) are the same point .. Let us consider the family of neighboring differential equations.where . and . are parameters and .(., .) is an analytic function.作者: emulsify 時間: 2025-3-28 00:54
,A test for nomographic representability using Decartes’ rectilinear abacus,Прямолинейным абаком Декарта называют [1] три однопараметрических семейства прямых на плоскости (., .).где ., ., . - параметры семейств (1)-(3).作者: strain 時間: 2025-3-28 03:28 作者: 鉆孔 時間: 2025-3-28 09:30 作者: 你正派 時間: 2025-3-28 14:26 作者: Fillet,Filet 時間: 2025-3-28 18:11
Letter to the editor,В моей работе ?О представлении непрерывных функций трех переменных суперпозициями непрерывных функций двух переменных?, опубликованной в ?Математическом сборнике? (т. 48 (90) (1959), 3-74), ммеется ошибка, на которую мое внимание любезно обратил Боте (Н. О. Bothe).作者: Interregnum 時間: 2025-3-28 19:15
Vladimir I. Arnold,Alexander B. Givental,Boris A. Collected Works of one of the most outstanding mathematicians of all times.作者: 哺乳動物 時間: 2025-3-29 00:41 作者: 公司 時間: 2025-3-29 04:28 作者: Radiculopathy 時間: 2025-3-29 10:55 作者: nettle 時間: 2025-3-29 13:12
The stability of the equilibrium position of a Hamiltonian system of ordinary differential equation . if the equilibrium position is stable in the first (linear) approximation. Then, as was shown by Birkhoff [1], by a proper choice of the variables ., ., . the Hamiltonian assumes the form .where . is an analytic function of ., ., ., . ≥ 2 and arbitrary. We call a case a . case if among the constants .. (2 ≤ . < ∞) is different from zero.作者: eardrum 時間: 2025-3-29 18:47
Some remarks on flows of line elements and frames,the spaces of line elements and frames of a Riemannian manifold - the isotropic flows. These include flows connected with curves of constant geodesic curvature and with the motion of a charged particle on a smooth surface in the presence of a magnetic field.作者: 導(dǎo)師 時間: 2025-3-29 21:52 作者: compose 時間: 2025-3-30 03:47 作者: 北京人起源 時間: 2025-3-30 05:18 作者: Intercept 時間: 2025-3-30 11:42 作者: 自然環(huán)境 時間: 2025-3-30 14:06 作者: neurologist 時間: 2025-3-30 18:08 作者: 踉蹌 時間: 2025-3-30 21:41 作者: Myocyte 時間: 2025-3-31 04:49 作者: 不連貫 時間: 2025-3-31 08:29 作者: 取消 時間: 2025-3-31 10:48
The classical theory of perturbations and the problem of stability of planetary systems, on the behavior of a system during an infinite time interval, for example the problem of stability, could not be solved by the theory of perturbations. Planetary motion is described in this theory by series of the form..作者: 啟發(fā) 時間: 2025-3-31 15:13
9樓作者: CHOIR 時間: 2025-3-31 18:26
10樓作者: Exploit 時間: 2025-3-31 22:17
10樓作者: 兵團 時間: 2025-4-1 03:54
10樓作者: 前兆 時間: 2025-4-1 09:55
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