3 3 votes If rank of at least one variable if infinite in CNF ,then it means that language of gammer is infinite? True/False? Theory of Computation context-free-language rank-of-nonterminal + – rahul sharma 5 2.0k views answer comment Share Follow Print See all 6 Comments 6 6 Comments reply Show 3 previous comments rahul sharma 5 commented Nov 14, 2017 reply Follow flag In ullman it is written that there are no useless symbols in CNF. 2 2 replyShare Red_devil commented Nov 14, 2017 reply Follow flag should be infinite language because there are no useless production in CNF and a infinite language can generate infinite elements 0 0 replyShare Rishabh Gupta 2 commented Nov 14, 2017 reply Follow flag @rahul OK. Thanks. Then I think it should be true. 0 0 replyShare Please log in or register to add a comment.
0 0 votes https://gateoverflow.in/7149/finding-the-rank-of-variable-for-cfg Aashish S answered Nov 13, 2017 Aashish S comment Share Follow 0 reply Please log in or register to add a comment.