Mapping class groups of simply connected high-dimensional manifolds need not be arithmetic
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DOI: 10.5802/crmath.61
Abstract: It is well known that Sullivan showed that the mapping class group of a simply connected highdimensional manifold is commensurable with an arithmetic group, but the meaning of “commensurable” in this statement seems to be… read more here.
Keywords: arithmetic group; group; simply connected; mapping class ... See more keywords