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Bounded cohomology of certain groups of homeomorphisms. (English) Zbl 0536.57023
The authors consider relations among bounded cohomology, $$\ell^ 1$$ homology and ordinary real cohomology of spaces or groups. They present in particular a necessary and sufficient condition for bounded cohomology to inject into ordinary cohomology and by using it they prove the vanishing of bounded cohomology and $$\ell^ 1$$ homology of $$Homeo_ k({\mathbb{R}}^ n)$$, the group of all the homeomorphisms of $${\mathbb{R}}^ n$$ with compact supports. They also determine the second bounded cohomology of $$SL_ 2{\mathbb{R}}$$.

##### MSC:
 57T20 Homotopy groups of topological groups and homogeneous spaces 55N99 Homology and cohomology theories in algebraic topology 20J05 Homological methods in group theory 58D05 Groups of diffeomorphisms and homeomorphisms as manifolds
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##### References:
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