By Hajime Sato

ISBN-10: 0821810464

ISBN-13: 9780821810460

The one such a lot tricky factor one faces whilst one starts off to profit a brand new department of arithmetic is to get a suppose for the mathematical experience of the topic. the aim of this booklet is to aid the aspiring reader gather this crucial logic approximately algebraic topology in a quick time period. To this finish, Sato leads the reader via basic yet significant examples in concrete phrases. furthermore, effects should not mentioned of their maximum attainable generality, yet by way of the easiest and such a lot crucial instances.

In reaction to feedback from readers of the unique variation of this ebook, Sato has further an appendix of important definitions and effects on units, normal topology, teams and such. He has additionally supplied references.

Topics coated comprise primary notions similar to homeomorphisms, homotopy equivalence, primary teams and better homotopy teams, homology and cohomology, fiber bundles, spectral sequences and attribute periods. gadgets and examples thought of within the textual content comprise the torus, the Möbius strip, the Klein bottle, closed surfaces, cellphone complexes and vector bundles.

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**Additional resources for Algebraic Topology: An Intuitive Approach**

**Example text**

Sinai tive choice of

Weiss [KW2]. Their proof uses parts of the Kamae arguments which he used to obtain a proof of Birkhoff-Khinchin theorem based on of the non-standard analysis. There are universal sequences for the groups Z”, R”: one can take as (C,} the sequence of cubes whose sides increase to infinity. The existence of such sequences is also known for solvable groups, but their construction is more difficult. M. Vershik. Unfortunately, at the present time there is no final solution to this problem for arbitrary locally compact groups.

J#),j j y ) , . ), jji') = y ! y l , with an invariant measure p, defined on the Bore1 o-algebra 4, of subsets of Let no:M I --+ Y be the projection: nox(')= yg) if x(')= (. ), ,yg),y y ) . . Given x(')E M I and a natural number n, denote by C,(x(") the cylinder subset of M I of = n o ( T k x ( ' )if) Ikl < n } . 7. A flow { T ' } on a Lebesgue space ( M ,A,p ) is said to be a B-flow if there exists to E R' such that Tr0is a B-automorphism. By now examples of B-flows of various origins have been constructed (cf part 11).

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