Dec 14, · Hartmann [17–19] developed the “Dap Tap” to determine the relative influence of various evaluation feature cate- gories, or notions, on the outcome of chess games. Using 62, positions from grandmaster tournament and match games, he found that “the most important notions yield a clear difference between winners and losers of the games”.Cited by: Constructing finite products from binary products and terminal. If a category has binary products and a terminal object then it has finite products. If a functor preserves binary products and the. Systems & Control Letters | Citations: 5, | Systems & Control Letters has become one of the leading journals in the field. The aim of the journal is to allow rapid dissemination of.