A class of contractible open 3-manifolds is defined. It is shown that all contractible open 3-manifolds which can be written as a union of cubes with a bounded number of handles are in this class. It ...
In this paper we show that for every C*-algebra A the natural homomorphism iA : U(A) → K₁(A) is injective if and only if SA has 1-cancellation and ${i_{{M_n}}}\left( A \right)$ is injective for any n ...
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