Karpuz, E. G.Çevik, A. S.2020-03-262020-03-262012Karpuz, E. G., Çevik, A. S., (2012). Grobner-Shirshov Bases for Extended Modular, Extended Hecke, and Picard Groups. Mathematical Notes, 92(5), 636-642. Doi: 10.1134/S00014346121100650001-43461573-8876https://dx.doi.org/10.1134/S0001434612110065https://hdl.handle.net/20.500.12395/28096In this paper, Grobner-Shirshov bases (noncommutative) for extended modular, extended Hecke and Picard groups are considered. A new algorithm for obtaining normal forms of elements and hence solving the word problem in these groups is proposed. DOI: 10.1134/S0001434612110065en10.1134/S0001434612110065info:eu-repo/semantics/openAccessextended modular groupextended Hecke groupGrobner-Shirshov basesword problemArticle925636642N/AWOS:000314263900006Q4