@Article{GhiselliRicciNavara:FSS05,
  IS = { zkontrolovano 30 Dec 2005 },
  UPDATE  = { 2005-12-14 },
  author =     {Roberto {Ghiselli Ricci} and Mirko Navara},
  title =      {Convexity conditions on t-norms and their additive generators},
  year =       {2005},
  month =      {February},
  pages =      {353--361},
  journal =    {Fuzzy Sets and Systems},
  publisher =  {Elsevier Science},
  address =    {Amsterdam, The Netherlands},
  issn =       {0165-0114},
  authorship = {50-50},
  volume =     {151},
  number =     {2},
  importance = {1},
  annote = {Let T be an Archimedean (continuous) t-norm and a in ]0,
    1/2[. Fodor and Ovchinnikov have studied a relation between the
    inequality T (max(x-a, 0), min(x +a, 1)) / T (x, x) and the
    convexity of the additive generator of T.  Here we clarify this
    relation and answer open problems from previous studies.},
  keywords =   {t-norm, additive generator, convexity},
  project =    {GACR 201/02/1540},
  psurl = {[PDF] },
}