Publisher's Synopsis
Excerpt from A Domain Decomposition Algorithm Based on a Change to a Hierarchical Basis
The integer arrays I 1 and I2 contain pointers to the two neighbors of i which are on the next coarser level. We can regard the algorithm as defining a factored form of the matrix H. The nodal to hierarchical transformation is similar. We note that the coarse mesh needs not be uniform; see Figure 1. If the refinements are not uniform.
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