3 votes 3 votes Consider the languages L1 = {babaabaaab…ba(n-1) ban b | n ≥ 1} L2=Complement(L1) L1 is not a CFL but L2 is, How? Theory of Computation context-free-language theory-of-computation + – vaishali jhalani asked Nov 18, 2016 • retagged Jul 4, 2017 by Arjun vaishali jhalani 769 views answer comment Share Follow See all 7 Comments See all 7 7 Comments reply Show 4 previous comments Gate Mission 1 commented Nov 18, 2016 reply Follow Share why isn't L1 CFL..?, Here we just have to compare left one a's with the right one a's ..so only one comparison is there and we can do this with help of 1 stack only. 0 votes 0 votes Deepak Poonia commented Jan 6, 2020 reply Follow Share Refer here : https://www.cs.utexas.edu/~cline/ear/automata/CS341-Fall-2004-Packet/2-Homework/Home16CFGPumping.pdf 1 votes 1 votes Shiva Sagar Rao commented Apr 27, 2021 reply Follow Share https://gateoverflow.in/211341/whether-the-given-languages-are-context-free-or-not 0 votes 0 votes Please log in or register to add a comment.