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A Concrete Introduction to Higher Algebra

Autor Lindsay N. Childs
en Limba Engleză Hardback – 12 dec 2008

Nivel de studiu: licență. Notăm cu interes apariția celei de-a treia ediții a lucrării A Concrete Introduction to Higher Algebra, semnată de Lindsay N Childs, un volum ce reușește să transforme abstractizarea algebrei superioare într-un parcurs intuitiv pentru studenții aflați la primul contact cu domeniul. Merită menționat că autorul alege o abordare inductivă, pornind de la structuri familiare — numerele întregi și polinoamele — pentru a introduce riguros conceptele de inel și corp. Putem afirma că această metodă facilitează tranziția de la calculul matematic de bază către gândirea structurală specifică algebrei moderne. Organizarea volumului reflectă o progresie logică, de la algoritmul lui Euclid și factorizarea unică, până la teme complexe precum reciprocitatea pătratică și clasificarea corpurilor finite. Un element distinctiv îl reprezintă integrarea masivă a aplicațiilor practice; teoria nu rămâne izolată, ci este utilizată pentru a explica mecanismele din spatele criptografiei și teoriei codurilor (BCH). Comparabil cu A First Course in Abstract Algebra de Joseph J. Rotman în ceea ce privește rigurozitatea, volumul lui Lindsay N Childs se diferențiază prin accentul pus pe latura computațională și prin includerea unor algoritmi moderni, precum testul de primalitate probabilist al lui Rabin. Cu peste 900 de exerciții distribuite strategic, textul încurajează participarea activă a cititorului. Cele peste 600 de pagini publicate de Springer oferă un suport didactic solid, unde demonstrațiile teoretice sunt echilibrate constant de contextul lor istoric și de utilitatea lor în securitatea datelor.

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Specificații

ISBN-13: 9780387745275
ISBN-10: 0387745270
Pagini: 620
Ilustrații: XIV, 604 p.
Dimensiuni: 165 x 244 x 43 mm
Greutate: 1.09 kg
Ediția:3. Auflage
Editura: Springer Nature B.V.
Locul publicării:New York, NY, United States

Public țintă

Lower undergraduate

De ce să citești această carte

Recomandăm această carte studenților la matematică și informatică de la nivel licență care doresc să înțeleagă fundamentul algebric al criptografiei moderne. Cititorul câștigă o bază solidă în teoria numerelor și algebră abstractă prin exemple concrete, nu doar prin teoreme izolate. Este o resursă esențială datorită celor 900 de exerciții și a explicațiilor clare asupra modului în care inelele și corpurile finite sunt aplicate în securitatea digitală.


Cuprins

Numbers.- Numbers.- Induction.- Euclid's Algorithm.- Unique Factorization.- Congruence.- Congruence classes and rings.- Congruence Classes.- Rings and Fields.- Matrices and Codes.- Congruences and Groups.- Fermat's and Euler's Theorems.- Applications of Euler's Theorem.- Groups.- The Chinese Remainder Theorem.- Polynomials.- Polynomials.- Unique Factorization.- The Fundamental Theorem of Algebra.- Polynomials in ?[x].- Congruences and the Chinese Remainder Theorem.- Fast Polynomial Multiplication.- Primitive Roots.- Cyclic Groups and Cryptography.- Carmichael Numbers.- Quadratic Reciprocity.- Quadratic Applications.- Finite Fields.- Congruence Classes Modulo a Polynomial.- Homomorphisms and Finite Fields.- BCH Codes.- Factoring Polynomials.- Factoring in ?[x].- Irreducible Polynomials.

Recenzii

From the reviews:
"The user-friendly exposition is appropriate for the intended audience. Exercises often appear in the text at the point they are relevant, as well as at the end of the section or chapter. Hints for selected exercises are given at the end of the book. There is sufficient material for a two-semester course and various suggestions for one-semester courses are provided. Although the overall organization remains the same in the second edition¿Changes include the following: greater emphasis on finite groups, more explicit use of homomorphisms, increased use of the Chinese remainder theorem, coverage of cubic and quartic polynomial equations, and applications which use the discrete Fourier transform." MATHEMATICAL REVIEWS
From the reviews of the third edition:
“This book is an introduction to abstract algebra. … it has enough material to give the instructor flexibility in the course. It is a good book for the serious student to have in his/her library. … I would recommend this especially for self-study, as the book reads exactly as a good teacher talks to a class.” (Philosophy, Religion and Science Book Reviews, bookinspections.wordpress.com, October, 2013)
"This book can serve as both an introduction to number theory and abstract algebra, sacrifices have to be made with respect to its algebraic content. … the book has been written with a high degree of rigor and accuracy and I definitely recommend it for consideration as the basis of an alternative route into abstract algebra and its applications." (The Mathematical Association of America, April, 2009)
"The target audience remains students requiring a substantial introduction to the elements of university-level algebra. … the text proceeds throughout on a foundation built from the students’ familiarity with integers and polynomials over fields. Great care is taken to proceed to abstract concepts by way of familiar examples, and agreat many exercises are provided throughout the text. … A noteworthy feature of the book is the inclusion of extensive material on applications, to such topics as cryptography and factoring polynomials." (Kenneth A. Brown, Mathematical Reviews, Issue 2009 i)

Textul de pe ultima copertă

This book is an informal and readable introduction to higher algebra at the post-calculus level. The concepts of ring and field are introduced through study of the familiar examples of the integers and polynomials. A strong emphasis on congruence classes leads in a natural way to finite groups and finite fields. The new examples and theory are built in a well-motivated fashion and made relevant by many applications - to cryptography, error correction, integration, and especially to elementary and computational number theory. The later chapters include expositions of Rabin's probabilistic primality test, quadratic reciprocity, the classification of finite fields, and factoring polynomials over the integers. Over 1000 exercises, ranging from routine examples to extensions of theory, are found throughout the book; hints and answers for many of them are included in an appendix.
The new edition includes topics such as Luhn's formula, Karatsuba multiplication, quotient groups and homomorphisms, Blum-Blum-Shub pseudorandom numbers, root bounds for polynomials, Montgomery multiplication, and more.
"At every stage, a wide variety of applications is presented...The user-friendly exposition is appropriate for the intended audience"
- T.W. Hungerford, Mathematical Reviews
"The style is leisurely and informal, a guided tour through the foothills, the guide unable to resist numerous side paths and return visits to favorite spots..."
- Michael Rosen, American Mathematical Monthly

Caracteristici

Informal and readable introduction to higher algebra New sections on Luhn's formula, Cosets and equations, and detaching coefficients Successful undergraduate text for more than 20 years