Abstract
Cataloged from PDF version of article.We present an upper bound on the zero-error list-coding\ud capacity of discrete memoryless channels. Using this bound, we show\ud that the list3 capacity of the 4/3 channel is at most 03512 b,\ud improving the best previous bound. The relatien of the bound to earlier\ud similar bouads, in particular, to Korner's graph+ntropy bound, is\ud discussed

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