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cs.IT2014★ 2 cited
The Sum-Product Algorithm for Degree-2 Check Nodes and Trapping Sets
John O. Brevik, Michael E. O'Sullivan
The sum-product algorithm for decoding of binary codes is analyzed for bipartite graphs in which the check nodes all have degree . The algorithm simplifies dramatically and may…
math.AG2014
Srinivas' Problem for Rational Double Points
John Brevik, Scott Nollet
For the completion B of a local geometric normal domain, V. Srinivas asked which subgroups of Cl B arise as the image of the map from Cl A to Cl B on class groups as A varies among…