ˌɛni pˈɪsɑːt nˈʌmbɚ ɔːɹ sˈeɪləm nˈʌmbɚɹ ɪz ɐ pˈɛɹən nˈʌmbɚ, ˌæzˌɪz ðə mˈɑːlɚ mˈɛʒɚɹ əvə mˈɑːnɪk ˈɪntɪdʒɚ pˌɑːlɪnˈoʊmɪəl.
Any Pisot number or Salem number is a Perron number, as is the Mahler measure of a monic integer polynomial.