Download Counterexamples on Uniform Convergence: Sequences, Series, by Andrei Bourchtein, Ludmila Bourchtein PDF

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By Andrei Bourchtein, Ludmila Bourchtein

A complete and thorough research of recommendations and effects on uniform convergence

Counterexamples on Uniform Convergence: Sequences, sequence, features, and Integrals presents counterexamples to fake statements in general stumbled on in the research of mathematical research and calculus, all of that are with regards to uniform convergence. The publication comprises the convergence of sequences, sequence and households of capabilities, and correct and incorrect integrals counting on a parameter. The exposition is particular to the most definitions and theorems so that it will discover assorted models (wrong and proper) of the elemental recommendations and results.

The objective of the e-book is threefold. First, the authors supply a short survey and dialogue of vital result of the idea of uniform convergence in genuine research. moment, the publication goals to assist readers grasp the awarded ideas and theorems, that are normally not easy and are assets of bewilderment and confusion. ultimately, this e-book illustrates how very important mathematical instruments reminiscent of counterexamples can be utilized in numerous situations.

The beneficial properties of the publication include:

  • An assessment of vital thoughts and theorems on uniform convergence
  • Well-organized insurance of the vast majority of the themes on uniform convergence studied in research courses
  • An unique method of the research of significant effects on uniform convergence established\ on counterexamples
  • Additional routines at various degrees of complexity for every subject lined within the book
  • A supplementary Instructor’s recommendations guide containing whole recommendations to all routines, that's on hand through a significant other website

Counterexamples on Uniform Convergence: Sequences, sequence, services, and Integrals is a suitable reference and/or supplementary interpreting for upper-undergraduate and graduate-level classes in mathematical research and complex calculus for college students majoring in arithmetic, engineering, and different sciences. The e-book can also be a necessary source for teachers educating mathematical research and calculus.

ANDREI BOURCHTEIN, PhD, is Professor within the division of arithmetic at Pelotas kingdom college in Brazil. the writer of greater than a hundred referred articles and 5 books, his learn pursuits comprise numerical research, computational fluid dynamics, numerical climate prediction, and genuine research. Dr. Andrei Bourchtein obtained his PhD in arithmetic and Physics from the Hydrometeorological heart of Russia.

LUDMILA BOURCHTEIN, PhD, is Senior learn Scientist on the Institute of Physics and arithmetic at Pelotas kingdom collage in Brazil. the writer of greater than eighty referred articles and 3 books, her study pursuits comprise genuine and complicated research, conformal mappings, and numerical research. Dr. Ludmila Bourchtein bought her PhD in arithmetic from Saint Petersburg country college in Russia.

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Additional resources for Counterexamples on Uniform Convergence: Sequences, Series, Functions, and Integrals

Example text

Let +∞ f (x, y) be continuous function on [a, +∞) × [c, d]. If F(y) = ∫a f (x, y)dx converges uniformly on [c, d], then F(y) is continuous on [c, d] and d +∞ +∞ d ∫c dy ∫a f (x, y)dx = ∫a dx ∫c f (x, y)dy. Corollary. Let f (x, y) be a continuous and sign-preserving function on +∞ [a, +∞) × [c, d]. If F(y) = ∫a f (x, y)dx is continuous function on [c, d], then d +∞ +∞ d ∫c dy ∫a f (x, y)dx = ∫a dx ∫c f (x, y)dy. Introduction Theorem 1. Integration with respect to parameter on an infinite interval.

178 . . . . . . . . . 184 1 1 − 2x2 y e , x3 y x>0 0, x = 0 . . . . 12 Example 23, integral F(y) = ∫0 f (x, y)dx. . . . . . . . . 13 Examples 28 and 29, function f (x, y) = x + x12 e−xy . . . . 14 Examples 28 and 29, integrals F(y) = ∫1 f (x, y)dx, G(y) = +∞ ∫1 fy (x, y)dx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 On the Structure of This Book This book consists of the introductory chapter and five chapters of counterexamples.

15 Example 26, ( ) sequence [ ( ) ] ⎧ 1 + 2n2 x − p , x ∈ p − 1 2 1 − 1 , p q) q ( [ q 2n q ( n )] ⎪q fn (x) = ⎨ 1 − 2n2 x − p , x ∈ p , p + 1 1 − 1 . . . . . . . . . . 16 Example 26, limit function f (x) = R(x) = q . . 17 Example 28, sequence fn (x) = n . nx+1 . . . . . . . . . . . . 82 1 sin 1x . . . . . . . . . . . n nx .......................... 2 Example 1, series n=1 [e − e−n x ]. . . . . . . . . . 3 Example 3, sequence fn (x) = 2n ln(1 + n2 x2 ).

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