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On the D(2)-problem for free groups

초록/요약

This thesis is concerned with the D(2)-problem which asks whether a finite connected 3-dimensional CW-complex X is necessarily homotopy equivalent to a finite 2-dimensional CW-complex X if X is cohomologically 2-dimensional. First, we study the 2-dimensional realization problem which is closely related to the D(2)-problem. Second, we review the result of F. E. A. Johnson which says that the D(2)-problem has an affirmative answer for all free groups of finite rank.

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