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Field name	Details
Dewey Class	514.2
Title	A Course in Simple-Homotopy Theory ([EBook] /) / by Marshall M. Cohen.
Author	Cohen, Marshall M.
Other name(s)	SpringerLink (Online service)
Publication	New York, NY : : Springer New York : : Imprint: Springer, , 1973.
Physical Details	XI, 116 p. : online resource.
Series	Graduate texts in mathematics 0072-5285 ; ; 10
ISBN	9781468493726
Summary Note	This book grew out of courses which I taught at Cornell University and the University of Warwick during 1969 and 1970. I wrote it because of a strong belief that there should be readily available a semi-historical and geo metrically motivated exposition of J. H. C. Whitehead's beautiful theory of simple-homotopy types; that the best way to understand this theory is to know how and why it was built. This belief is buttressed by the fact that the major uses of, and advances in, the theory in recent times-for example, the s-cobordism theorem (discussed in §25), the use of the theory in surgery, its extension to non-compact complexes (discussed at the end of §6) and the proof of topological invariance (given in the Appendix)-have come from just such an understanding. A second reason for writing the book is pedagogical. This is an excellent subject for a topology student to "grow up" on. The interplay between geometry and algebra in topology, each enriching the other, is beautifully illustrated in simple-homotopy theory. The subject is accessible (as in the courses mentioned at the outset) to students who have had a good one semester course in algebraic topology. I have tried to write proofs which meet the needs of such students. (When a proof was omitted and left as an exercise, it was done with the welfare of the student in mind. He should do such exercises zealously.:
Contents note	I. Introduction -- §1. Homotopy equivalence -- §2. Whitehead’s combinatorial approach to homotopy theory -- §3. CW complexes -- II. A Geometric Approach to Homotopy Theory -- §4. Formal deformations -- §5. Mapping cylinders and deformations -- §6. The Whitehead group of a CW comple -- §7. Simplifying a homotopically trivial CW pair -- §8. Matrices and formal deformations -- III. Algebra -- §9. Algebraic conventions -- §10. The groups KG(R) -- §11. Some information about Whitehead groups -- §12. Complexes with preferred bases [= (R,G)-complexes] -- §13. Acyclic chain complexes -- §14. Stable equivalence of acyclic chain complexes -- §15. Definition of the torsion of an acyclic comple -- §16. Milnor’s definition of torsion -- §17. Characterization of the torsion of a chain comple -- §18. Changing rings -- IV. Whitehead Torsion in the CW Category -- §19. The torsion of a CW pair — definition -- §20. Fundamental properties of the torsion of a pair -- §21. The natural equivalence of Wh(L) and ? Wh (?1Lj) -- §22. The torsion of a homotopy equivalence -- §23. Product and sum theorems -- §24. The relationship between homotopy and simple-homotopy -- §25. Tnvariance of torsion, h-cobordisms and the Hauptvermutung -- V. Lens Spaces -- §26. Definition of lens spaces -- §27. The 3-dimensional spaces Lp,q -- §28. Cell structures and homology groups -- §29. Homotopy classification -- §30. Simple-homotopy equivalence of lens spaces -- §31. The complete classification -- Appendix: Chapman’s proof of the topological invariance of Whitehead Torsion -- Selected Symbols and Abbreviations.
System details note	Online access to this digital book is restricted to subscription institutions through IP address (only for SISSA internal users)
Internet Site	http://dx.doi.org/10.1007/978-1-4684-9372-6
Links to Related Works	Subject References: Algebraic Topology . Mathematics . Authors: Cohen, Marshall M. . Corporate Authors: SpringerLink (Online service) . Series: Graduate texts in mathematics . GTM . Classification: 514.2 .

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A Course in Simple-Homotopy Theory

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