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Ladataan... Numeri razionali e numeri irrazionali (vuoden 1976 painos)Tekijä: Ivan Niven
TeostiedotNumbers: rational and irrational (tekijä: Ivan Niven)
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Kirjaudu LibraryThingiin nähdäksesi, pidätkö tästä kirjasta vai et. Ei tämänhetkisiä Keskustelu-viestiketjuja tästä kirjasta. Indeholder "Note to the Reader", "Introduction", "Chapter 1: Natural Numbers and Integers", " 1.1 Primes", " 1.2 Unique Factorization", " 1.3 Integers", " 1.4 Even and Odd Integers", " 1.5 Closure Properties", " 1.6 A Remark on the Nature of Proof", "Chapter 2: Rational Numbers", " 2.1 Definition of Rational Numbers", " 2.2 Terminating and Non-terminating Decimals", " 2.3 The Many Ways of Stating and Proving Propositions", " 2.4 Periodic Decimals", " 2.5 Terminating Decimals Written as Periodic Decimals", " 2.6 A Summary", "Chapter 3: Real Numbers", " 3.1 The Geometric Viewpoint", " 3.2 Decimal Representations", " 3.3 The Irrationality of sqrt(2)", " 3.4 The Irrationality of sqrt(3)", " 3.5 The Irrationality of sqrt(6) and sqrt(2) + sqrt(3)", " 3.6 The Words We Use", " 3.7 An Application to Geometry", " 3.8 A Summary", "Chapter 4: Irrational Numbers", " 4.1 Closure Properties", " 4.2 Polynomial Equations", " 4.3 Rational Roots of Polynomial Equations", " 4.4 Further Examples", " 4.5 A Summary", "Chapter 5: Trigonometric and Logarithmic Numbers", " 5.1 Irrational Values of Trigonometric Functions", " 5.2 A Chain Device", " 5.3 Irrational Values of Common Logarithms", " 5.4 Transcendental Numbers", " 5.5 Three Famous Construction Problems", " 5.6 Further Analysis of cbrt(2)", " 5.7 A Summary", "Chapter 6: The Approximation of Irrationals by Rationals", " 6.1 Inequalities", " 6.2 Approximation by Integers", " 6.3 Approximation by Rationals", " 6.4 Better Approximations", " 6.5 Approximations to within 1/(n^2)", " 6.6 Limitations on Approximations", " 6.7 A Summary", "Chapter 7: The Existence of Transcendental Numbers", " 7.1 Some Algebraic Preliminaries", " 7.2 An Approximation to alfa", " 7.3 The Plan of the Proof", " 7.4 Properties of Polynomials", " 7.5 The Transcendence of alfa", " 7.6 A Summary", "Appendix A: Proof That There Are Infinitely Many Prime Numbers", "Appendix B. Proof of the Fundamental Theorem of Arithmetic", "Appendix C. Cantor's Proof of the Existence of Transcendental Numbers", "Appendix D. Trigonometric Numbers", "Answers and Suggestions to Selected Problems", "Index". En udmærket bog med mange eksempler og forklaringer på transcendente tal, Liouville konstruktionen af et transcendent tal og rationelle rødder af polynomier. näyttää 2/2 ei arvosteluja | lisää arvostelu
A superb development that starts with the natural numbers and carries the reader through the rationals and their decimal representations to algebraic numbers and then to the real numbers. Along the way, you will see characterizations of the rationals and of certain special (Liouville) transcendental numbers. This material is basic to all of algebra and analysis. Professor Niven's book may be read with profit by interested high school students as well as by college students and others who want to know more about the basic aspects of pure mathematics. Kirjastojen kuvailuja ei löytynyt. |
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Google Books — Ladataan... LajityypitMelvil Decimal System (DDC)512.81Natural sciences and mathematics Mathematics Algebra Formerly: Abstract algebra Formerly : Theory of numbers (see 521.1 Systems of arithmetic)Kongressin kirjaston luokitusArvio (tähdet)Keskiarvo:
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C'è però qualcosa che rende comunque la lettura piacevole, e sono le considerazioni di Niven, che scrive esplicitamente che il suo approccio nel testo tende a lasciare dimostrazioni non perfettamente rifinite. Questo non perché lui ritenga che le dimostrazioni non siano importanti - è un matematico, in fin dei conti! - quanto perché credeva che c'è un tempo per la precisione e un tempo per la formazione delle idee matematiche, e il suo libro fa parte di quest'ultimo tempo. ( )