The title Caliph ( Ø Ù Ù Ù Ø ) was claimed by Abd-ar-Rahman III on January 16 , 929 ; he was previously known as the Emir of CÃ rdoba ( Ø # Ù The title Caliph ( Ø Ù Ù Ù Ø ) was claimed by Abd-ar-Rahman III on 16 January 929 ; he was previously known as the Emir of CÃ rdoba ( Ø # Ù