1 votes 1 votes Union of Regular and non Regular is? Iceberg asked Nov 5, 2015 Iceberg 313 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Arjun commented Nov 5, 2015 reply Follow Share Take $A = \Sigma^*$. Now you should get answer. 0 votes 0 votes Iceberg commented Nov 5, 2015 reply Follow Share I got it that B may be or may not be regular. e.g Let $A = a^*b^*$ and $B = a^nb^n$ then $A \cup B = a^*b^*$ but consider $A=ab$ and $B = a^nb^n$ then $A \cup B =a^nb^n$ which is not regular. 3 votes 3 votes Arjun commented Nov 5, 2015 reply Follow Share yes, thats all.. 0 votes 0 votes Iceberg commented Nov 5, 2015 reply Follow Share thanks alot :) 1 votes 1 votes Please log in or register to add a comment.
0 votes 0 votes B may be or may not be regular. e.g Let $A=a^∗b^∗ and B=a^nb^n then A\cupB=a^∗b^∗$ but consider $A=ab and B = a^nb^n then A \cup B = a^nb^n$ which is not regular. Iceberg answered Nov 5, 2015 Iceberg comment Share Follow See all 0 reply Please log in or register to add a comment.