Title SOME DISTANCE BASED INDICES OF GRAPHS BASED ON FOUR NEW OPERATIONS RELATED TO THE LEXICOGRAPHIC PRODUCT Type of Research Article Keywords SOME DISTANCE BASED INDICES OF GRAPHS BASED ON FOUR NEW OPERATIONS RELATED TO THE LEXICOGRAPHIC PRODUCT Abstract SOME DISTANCE BASED INDICES OF GRAPHS BASED ON FOUR NEW OPERATIONS RELATED TO THE LEXICOGRAPHIC PRODUCT Researchers N dehgardi (First Researcher)، Seyed Mahmoud Sheikholeslami Kavkani (Second Researcher)، (Third Researcher)