Preparata code: Difference between revisions

Revision as of 05:34, 1 August 2008

Revision as of 20:28, 4 December 2008

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# ''X'', ''Y'' each have even weight;

# <math>\sum_{x \in X} x = \sum_{y \in Y} y;</math>

# <math>\sum_{x \in xX} x^3 + \left(\sum_{x \in X} x\right)^3 = \sum_{y \in Y} y^3.</math>

The Peparata code is obtained by deleting the position in ''X'' corresponding to 0 in GF(2^''m'').