implicants

What Are The Essential Prime Implicants? Essential prime implicants(EPI) are those prime implicants which always appear in final solution. Example: Redundant Prime Implicants – The prime implicants for which each of its minterm is covered by some essential prime implicant are redundant prime implicants(RPI). What are essential prime implicants with suitable example? 2.4. 17 Definition