Aspherical 2-complexes
نویسندگان
چکیده
منابع مشابه
L-invariants of Finite Aspherical Cw-complexes
Let X be a finite aspherical CW-complex whose fundamental group π1(X) possesses a subnormal series π1(X) ⊲ Gm ⊲ . . . ⊲ G0 with a non-trivial elementary amenable group G0. We investigate the L2-invariants of the universal covering of such a CW-complex X. We show that the NovikovShubin invariants αn(X̃) are positive. We further prove that the L2-torsion ρ(2)(X̃) vanishes if π1(X) has semi-integral...
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ژورنال
عنوان ژورنال: Journal of Pure and Applied Algebra
سال: 1978
ISSN: 0022-4049
DOI: 10.1016/0022-4049(78)90024-5