@InProceedings{PetrikSarkoci:IFSAEUSFLAT2009,
  IS = { zkontrolovano 29 Jan 2010 },
  UPDATE  = { 2009-09-29 },
	author =      { Petr{\'\i}k, Milan and Sarkoci, Peter },
	title =       { Associativity of triangular norms in light of web geometry },
	year =        { 2009 },
	pages =       { 595--599 },
        booktitle =   { IFSA/EUSFLAT 2009: International Fuzzy Systems Association
                        World Congress, European Society for Fuzzy Logic and
                        Technology Conference},
	editor =      { Carvalho, J.P. and Dubois, D. and Kaymak, U. and Sousa, J.M.C. },
	publisher =   { Instituto Suparior T{\'e}chnico Av. Rovisco Pais },
	address =     { Lisboa, Portugal },
	isbn =        { 978-989-95079-6-8 },
	book_pages =  { 1899 },
	month =       { July },
	day =         { 20--24 },
	venue =       { Lisabon, Portugal },
	annote = { The aim of this paper is to promote web geometry
          and, especially, the Reidemeister closure condition as a
          powerful and intuitive tool characterizing associativity of
          the Archimedean triangular norms. In order to demonstrate
          its possible applications, we provide the full solution to
          the problem of convex combinations of nilpotent triangular
         norms. },
	keywords =    { archimedean triangular norm, web geometry, 
                        Reidemeister closure condition },
	authorship =  { 50-50 },
	note =        { CD-ROM },
	project =     { GACR 401/09/H007 },
	www         = { http://ifsa2009.ist.utl.pt },
}