0 votes 0 votes Are regular languages closed under inverse substitution? Shalini19 asked Jun 9, 2017 Shalini19 585 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply Rupendra Choudhary commented Jun 10, 2017 reply Follow Share Homomorphism is a substitution and Regular languages are closed under inverse homomorphism so Yes! they are closed under inverse substitution. 0 votes 0 votes dragonball commented Aug 16, 2017 reply Follow Share You can not say homomorphism and substitution is same . Both are different . 0 votes 0 votes Please log in or register to add a comment.