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Introduction to Analysis【Arthur P. Mattuck】.pdf

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Contents
Preface
1. Real Numbers and Monotone Sequences
1.1 Introduction. Real numbers.
1.2 Increasing sequences.
1.3 The limit of an increasing sequence.
1.4 Example: the number e.
1.5 Example: the harmonic sum and Euler's number.
1.6 Decreasing sequences. The Completeness Property.
Exercises Ch1
2. Estimations and Approximations
2.1 Introduction. Inequalities.
2.2 Estimations.
2.3 Proving boundedness.
2.4 Absolute values. Estimating size.
2.5 Approximations.
2.6 The terminology "for n large".
Exercises Ch2
3. The Limit of a Sequence
3.1 Definition of limit.
3.2 The uniqueness of limits. The K-ε principle.
3.3 Infinite limits.
3.4 An important limit.
3.5 Writing limit proofs.
3.6 Some limits involving integrals.
3.7 Another limit involving an integral.
Exercises Ch3
4. Error Term Analysis
4.1 The error term.
4.2 The error in the geometric series.
4.3 A sequence converging to √2: Newton's method.
4.4 The sequence of Fibonacci fractions.
Exercises Ch4
5. The Limit Theorems
5.1 Limits of sums, products, and quotients.
5.2 Comparison theorems.
5.3 Location theorems.
5.4 Subsequences. Non-existence of limits.
5.5 Two common mistakes.
Exercises Ch5
6. The Completeness Property
6.1 Introduction. Nested intervals.
6.2 Cluster points of sequences.
6.3 The Bolzano-Weierstrass theorem.
6.4 Cauchy sequences.
6.5 The Completeness Property for sets.
Exercises Ch6
7. Infinite Series
7.1 Series and sequences.
7.2 Elementary convergence tests.
7.3 The convergence of series with negative terms.
7.4 Convergence tests: ratio and n-th root tests.
7.5 The integral and asymptotic comparison tests.
7.6 Series with alternating signs: Cauchy's test.
7.7 Rearranging the terms of a series.
Exercises Ch7
8. Power Series
8.1 Introduction. Radius of convergence.
8.2 Convergence at the endpoints. Abel summation.
8.3 Operations on power series: addition.
8.4 Multiplication of power series.
Exercises Ch8
9. Functions of One Variable
9.1 Functions.
9.2 Algebraic operations on functions.
9.3 Some properties of functions.
9.4 Inverse functions.
9.5 The elementary functions.
Exercises Ch9
10. Local and Global Behavior
10.1 Intervals. Estimating functions.
10.2 Approximating functions.
10.3 Local behavior.
10.4 Local and global properties of functions.
Exercises Ch10
11. Continuity and Limits
11.1 Continuous functions.
11.2 Limits of functions.
11.3 Limit theorems for functions.
11.4 Limits and continuous functions.
11.5 Continuity and sequences.
Exercises Ch11
12. The Intermediate Value Theorem
12.1 The existence of zeros.
12.2 Applications of Bolzano's theorem.
12.3 Graphical continuity.
12.4 Inverse funtions.
Exercises Ch12
13. Continuous Functions on Compact Intervals
13.1 Compact intervals.
13.2 Bounded continous functions.
13.3 Extremal points of continuous functions.
13.4 The mapping viewpoint.
13.5 Uniform continuity.
Exercises Ch13
14. Differentiation: Local Properties
14.1 The Derivative.
14.2 Differentiation formulas.
14.3 Derivatives and Local Properties.
Exercises Ch14
15. Differentiation: Global Properties
15.1 The mean-value theorem.
15.2 Applications of the mean-value theorem.
15.3 Extension of the mean-value theorem.
15.4 L'Hospital's rule for indeterminate forms.
Exercises Ch15
16. Linearization and Convexity
16.1 Linearization.
16.2 Applications to convexity.
Exercises Ch16
17. Taylor Approximation
17.1 Taylor polynomials.
17.2 Taylor's theorem with the Lagrange remainder.
17.3 Estimating error in Taylor approximation.
17.4 Taylor series.
Exercises Ch17
18. Integrability
18.1 Introduction. Partitions.
18.2 Integrability.
18.3 Integrability of monotone and continuous functions.
18.4 Basic properties of integrable functions.
Exercises Ch18
19. The Riemann Integral
19.1 Refinement of partitions.
19.2 Definition of the Riemann integral.
19.3 Riemann sums.
19.4 Basic properties of integrals.
19.5 The interval addition property.
19.6 Piecewise continous and monotone fuctions.
Exercises Ch19
20. Derivatives and Integrals
20.1 First fundamental theorem of calculus.
20.2 Existence and uniqueness of antiderivatives.
20.3 Other relations between derivatives and integrals.
20.4 The logarithm and exponential functions.
20.5 Stirling's formula.
20.6 Growth rate of functions.
Exercises Ch20
21. Improper Integrals
21.1 Basic definitions.
21.2 Comparison theorems.
21.3 The Gamma function.
21.4 Absolute and conditional convergence.
Exercises Ch21
22. Sequences and Series of Functions
22.1 Pointwise and uniform convergence.
22.2 Criteria for uniform convergence.
22.3 Continuity and uniform convergence.
22.4 Integration term-by-term.
22.5 Differentiation term-by-term.
22.6 Power series and analytic functions.
Exercises Ch22
23. Infinite Sets and the Lebesgue Integral
23.1 Introduction. Infinite sets.
23.2 Sets of measure zero.
23.3 Measure zero and Riemann-integrability.
23.4 Lebesgue integration.
Exercises Ch23
24. Continuous Functions on the Plane
24.1 Introduction. Norms and distances in R².
24.2 Convergence of sequences.
24.3 Functions on R².
24.4 Continuous functions.
24.5 Limits and continuity.
24.6 Compact sets in R².
24.7 Continuous functions on compact sets in R².
Exercises Ch24
25. Point Sets in the Plane
25.1 Closed sets in R².
25.2 The Compactness theorem in R².
25.3 Open sets.
Exercises Ch25
26. Integrals with a Parameter
26.1 Integrals depending on a parameter.
26.2 Differentiating under the integral sign.
26.3 Changing the order of integration.
Exercises Ch26
27. Differentiating Improper Integrals
27.1 Introduction.
27.2 Pointwise vs. uniform convergence of integrals.
27.3 Continuity theorem for improper integrals.
27.4 Integrating and differentiating improper integrals.
27.5 Differentiating the Laplace transform.
Exercises Ch27
Appendix A Sets, Numbers, and Logic
A.0 Sets and Numbers.
A.1 If-then statements.
A.2 Contraposition and indirect proof.
A.3 Counterexamples.
A.4 Mathematical induction.
Exercises
Appendix B Quantifiers and Negation
B.1 Introduction. Quantifiers.
B.2 Negation.
B.3 Examples involving functions.
Exercises
Appendix C Picard Iteration
C.1 Introduction.
C.2 The Picard iteration theorems.
C.3 Fixed points.
Exercises
Appendix D Applications to Differential Equations
D.1 Introduction.
D.2 Discreteness of the zeros.
D.3 The alternation of zeros.
D.4 Reduction to normal form.
D.5 Comparison theorem for zeros.
Exercises
Appendix E Existence and Uniqueness Theorems for Solutions to Differential Equations
E.1 Picard’s method of successive approximations.
E.2 Local existence of solutions to y'=f(x,y).
E.3 The uniqueness of solutions.
E.4 Extending the existence and uniqueness theorems.
Exercises
Index
PRENTICE HALL ARTHUR MATTUCK
Introduction to Analysis Arthur Mattuck Massachusetts Institute of Technology Prentice Hall Upper Saddle River, New Jersey 07458
Library of Congress Cataloging-in-Publication Data Mattuck, Arthur Introduction to Analysis / Arthur Mattuck p. cm. Includes index. ISBN 0-13-081132-7 1. Mathematical Analysis. QA300.M23 1999 515-dc21 I. Title 98-25850 CIP Cover art: Sunrise by Robert Kabak, 1956 Editorial director, Tim Bozik Editor-in-chief, Jerome Grant Acquisition editor, George Lobell Executive managing editor, Kathleen Schiaparelli Managing editor, Linda Behrens Editorial assistants, Gale Epps, Nancy Bauer Assistant VP production/manufacturing, David W. Riccardi Manufacturing manager,’Trudy Pisciotti Manufacturing buyer, Alan Fischer Creative director, Paula Maylahn Art director, Jane Conte Marketing manager, Melody Marcus © 1999 by Prentice Hall, Inc. Upper Saddle River, NJ 07458 All rights reserved. No part of this book may be reproduced, in any form or by any means, without permission in writing from the publisher. Printed in the United States of America 10987654 ISBN 0-13-081132-7 Prentice-Hall International (UK) Limited, London Prentice-Hall of Australia Pty. Limited, Sydney Prentice-Hall of Canada, Inc., Toronto Prentice-Hall Hispanoamericana, S. A., Mexico Prentice-Hall of India Private Limited, New Delhi Prentice-Hall of Japan, Inc叫 To妙。 Pearson Education Asia Pte. Ltd., Singapore Editora Prentice-Hall do Brasil, Ltda., Rio de Janeiro
to the memory of my pα陀ηts Jacob A. Mattuck Rae B. Mattuck αnd my teacher Arnold Dresden
Contents Preface 1. Real Numbers and Monotone Sequences 1 Introduction; R启al numbers 1 Increasing sequences 3 1.1 1.2 1.3 Limit of an increasing sequence 4 1.4 Example: the number e 5 1.5 Example: the h缸monic sum and Euler’s number γ8 1.6 Decreasing sequences; Completeness property 10 2. Estimations and Approximations 17 Introduction; Inequalities 17 Estimations 18 Proving boundedness 20 2.1 2.2 2.3 2.4 Absolute values; estimating size 21 2.5 Approximations 24 2.6 The terminology “for n large” 27 3. The Limit of a Sequence 35 Infinite limits 40 3.1 Definition of limit 35 3.2 Uniqueness of limits; the K-e principle 38 3.3 3.4 Limit of αn 42 3.5 Writing limit proofs 43 3.6 3. 7 Another limit involving an integral 45 Some limits involving integrals 44 4. The Error Term 51 The error term 51 4.1 The error in the geometric series; Applications 52 4.2 4.3 A sequence co盯erging to v'2: Newton’s method 53 4.4 The sequence of Fibonacci fractions 56 5. Limit Theorems for Sequences 61 Limits of sums, products,皿d quotients 61 5.1 5.2 Comparison theorems 64 5.3 5.4 5.5 Location theorems 67 Subsequences; Non-existence of limits 68 Two common mistakes 71 Vil
Vlll Introduction to Analysis 6. The Completeness Property 78 Introduction; Nested intervals 78 6.1 6.2 Cluster points of sequences 80 6.3 6.4 Cauchy sequences 83 6.5 Completeness property for sets 86 The Bolzano-Weierstrass theorem 82 7. Infinite Series 94 Series and sequences 94 Elementary convergence tests 97 The convergence of series with negative terms 100 7.1 7.2 7.3 7.4 Convergence tests: ratio and n ” th root tests 102 7.5 7.6 7. 7 Rearranging the terms of a series 107 The integral and asymptotic comparison tests 104 Series with alternating signs: Cauchy’s test 106 8. Power Series 114 Introduction; Radius of convergence 114 8.1 8.2 Convergence at the endpoints; Abel summation 117 8.3 Operations on power series: addition 119 8.4 Multiplication of power series 120 9. Functions of One Variable 125 Functions 125 9.1 9.2 Algebraic operations on functions 127 9.3 9.4 9.5 Some properties of functions 128 Inverse functions 131 The elementary functions 133 10. Local and Global Behavior 137 Intervals; estimating functions 137 10.1 10.2 Approximating functions 141 10.3 Local behavior 143 10.4 Local and global properties of functions 145 11. Continuity and Limits of Functions 151 11.1 Continuous functions 151 11.2 Limits of functions 155 11.3 Limit theorems for functions 158 11.4 Limits and continuous functions 162 11.5 Continuity and sequences 155 12. The Intermediate Value Theorem 172 12.1 The existence of zeros 172 12.2 Applications of Bolzano’s theorem 175 12.3 Graphical continuity 178 12.4 Inverse functions 179
Contents IX 13. Continuous Functions on Compact Intervals 185 13.1 Compaεt intervals 185 13.2 Bounded continuous functions 186 13.3 Extremal points of continuous functions 187 13.4 The mapping viewpoint 189 13.5 Uniform continuity 190 14. Differentiation: Local Properties 196 14.1 The derivative 196 14.2 Differentiation formulas 200 14.3 Derivatives and local properties 202 15. Differentiation: Global Properties 210 15.1 The mean-value theorem 210 15.2 Applications of the mean-value theorem 212 15.3 Extension of the mean-value theorem 214 15.4 L’Hospital’s rule for indeterminate forms 215 16. Linearization and Convexity 222 16.1 Linearization 222 16.2 Applications to convexity 225 17. Taylor Approximation 231 17 .1 Taylor polynomials 231 17.2 Taylor’s theorem with Lagrange remainder 233 17.3 Estimating error in Taylor approximation 235 17.4 Taylor series 236 18. Integrability 241 Introduction; Partitions 241 Integrability 242 Integrability of monotone and continuous functions 244 18.1 18.2 18.3 18.4 Basic properties of integrable functions 246 19. The Riemann Integral 251 19.1 Refinement of partitions 251 19.2 Definition of the Riemann integral 253 19.3 Riemann sums 255 19.4 Basic properties of integrals 257 19.5 The interval addition property 258 19.6 Piecewise continuous and monotone functions 260 20. Derivatives and Integrals 269 20.1 The first fundamental theorem of calculus 269 20.2 Existence and uniqueness of antiderivatives 270 20.3 Other relations between derivatives and integrals 274 20.4 The logarithm and exponential functions 276 20.5 Stirling’s formula 278 20.6 Growth rate of functions 280
x Introduction to Analysis 21. Improper Integrals 290 21.1 Basic definitions 290 21.2 Comparison theorems 292 21.3 The g缸nma function 295 21.4 Absolute and conditional convergence 298 22. Sequences and Series of Functions 305 22.1 Pointwise and uniform convergence 305 22.2 Criteria for uniform convergence 310 22.3 Continuity and uniform convergence 312 22.4 22.5 Differentiation term-by-term 316 22.6 Power series and analytic functions 318 Integration term-by-term 314 23. Infinite Sets and the Lebesgue Integral 329 Introduction; infinite sets 329 23.1 23.2 Sets of measure zero 333 23.3 Measure zero and Riemann-integrability 335 23.4 Lebesgue integration 338 24. Continuous Functions on the Plane 347 Introduction; Norms and distances in JR2 347 24.1 24.2 Convergence of sequences 349 24.3 Functions on 1R2 351 24.4 Continuous functions 352 24.5 Limits and continuity 354 24.6 Compaεt sets in IR.2 355 24. 7 Continuous functions on compact sets in JR2 356 25. Point-sets in the Plane 364 25.1 Closed sets in IR.2 364 25.2 Compactness theorem in JR2 367 25.3 Open sets 368 26. Integrals with a Parameter 375 Integrals depending on a p缸ameter 375 26.1 26.2 Differentiating under the integral sign 377 26.3 Changing the order of integration 380 27. Differentiating Improper Integrals 386 Introduction 386 27.1 27.2 Pointwise vs. uniform convergence of integrals 387 27.3 Continuity theorem for improper integrals 390 27.4 27.5 Differentiating the Laplace tr皿sform 393 Integrating and differentiating improper integrals 391
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