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A classification of the topological types ofR2-actions on closed orientable 3-manifolds

✍ Scribed by G. Chatelet; H. Rosenberg; D. Weil

Book ID
112825743
Publisher
Springer
Year
1974
Tongue
English
Weight
683 KB
Volume
43
Category
Article
ISSN
0073-8301

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On the homotopy types of closed 4-manifo
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✍ Jonathan A. Hillman πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 English βš– 622 KB

We show that if A4 is a closed 4-manifold such that ~z(A4) ?Z Z and x(M) 6 0 then its homotopy type is determined up to a finite ambiguity by T = TI (M). We also show that (for given T) the action of T on TZ(M) and the orientation character WI(M) determine each other, and find strong constraints on