Hatcher 2.1.6


Compute the simplicial homology groups of the \Delta-complex obtained from n+1 2-simplices \Delta_0^2, \dots, \Delta_n^2 by identifying all three edges of \Delta_0^2 to a single edge, and for i>0 identifying the edges [v_0,v_1] and [v_1,v_2] of \Delta_i^2 to a single edge and the edge [v_0,v_2] to the edge [v_0,v_1] of \Delta_{i-1}^2.

Screen Shot 2016-06-27 at 10.10.32 PM

Screen Shot 2016-06-27 at 10.10.39 PM



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